1996 Water Management Plan for the FCRPS

1997 Water Management Plan for the FCRPS

Draft/06 February 1997

Work File: G:\RCC\TMT97|WATERPL.97.DOC

Introduction

This Water Management Plan (Plan) describes the measures that are likely to occur in or are desired for the 1997 migration season in order to optimize passage conditions for juvenile and adult anadromous salmonids. It covers all relevant facets of the operation of the Federal Columbia River Power System (FCRPS), including turbine outages, power generation schedules, water temperature control, spill, total dissolved gas management, and special operations for research and other uses. The Plan is prepared and updated annually by 15 April of each year by the Technical Management Team (TMT) in accordance with the National Marine Fisheries Service's (NMFS) Biological Opinion (BiOp) on the operation of the FCRPS and Juvenile Transportation Program in 1995 and Future Years. The 1997 Plan is based on an update of the 1996 Plan, taking into account changes in runoff forecasts and comments received on the 1996 operations. It is consistent with guidelines provided in a companion document entitled "TMT Guidelines".

Three appendices are attached to the 1997 TMT Water Management Plan, including:

Appendix 1. Spill Priority List
Appendix 2. Dissolved Gas Management Plan
Appendix 3. Dworshak Grouting
Appendix 4: Emergency Protocols

I. January 1997 Final Water Supply Forecast

The January 1997 final water supply forecasts issued by the River Forecast Center are summarized in Table 1 for key locations on the Columbia and Snake Rivers. Similar forecasts developed for 1996 are also given for comparison purposes. The Columbia Basin snowpack has its highest start in 30 years, with every sub-basin reporting over 100 percent. The January - July forecast for the Columbia River at The Dalles is 138 million acre-feet (maf), 130% of normal. This is the highest volume forecast on 1 January since 1974. Volume forecasts range from near average in the Upper Columbia in Canada to greater than 150 percent for most of the Snake River locations. The Canadian snowpack started off at 106%, which is the lowest percentage in the basin. Runoff forecasts for Reclamation reservoirs above Brownlee are in the 140-210 percent of normal range, larger than 1996 runoff forecasts.

Table 1. 1997 (and 1996) Runoff Volume Forecasts

Locations 1997 January Final 1997 January Final 1996 April Final 1996 April Final

Maf % average Maf % average

Libby (Jan-Jul) 7.16 112% 7.89 123%

Hungry Horse (Jan-Jul) 2.97 131% 2.82 124%

Grand Coulee
(Jan-Jul)
76.8 121% 75.0 119%

Dworshak (Apr-Jul) 3.98 147% 2.66 99%

Lower Granite
(Jan-Jul)
45.4 153% 36.2 122%

Lower Granite (Apr-Jul) 33.0 152% 21.9 101%

The Dalles
(Jan-Jul)
138.0 130% 126.0 119%

The Dalles
(Apr-Aug)
110.0 130% 86.9 103%

II. Pre-Flow Augmentation Operations (October-March)

The Opinion states that the Corps of Engineers (COE), Bonneville Power Administration (BPA) and Bureau of Reclamation (BOR) shall operate the FCRPS during the fall and winter months, in a manner that provides the following levels of confidence of refill (see Table 2) to April 20 flood control elevations, while meeting the project and system minimum flow and flood control constraints prior to April 20:

Table 2. Required Confidence Levels for Reservoir Refill (Source: BO)

Libby and Hungry Horse Grand Coulee Albeni Falls

75% 85% 90%

The maximum flood control draft varies at each project. The timing of the maximum draft also varied for each project. Table 3 provides the 1997 maximum flood control requirements at each project and the date of maximum draft at each project:

Libby maintained full load (20,000 cfs with four units operating) for most of December. The project was drafted hard to try to eliminate possible spill in January to get down to anticipated low flood control elevations. End-of-January flood control target elevation is 2365.6 feet. At mid-night 2 February 1997, Libby was at elevation 2368 feet (primarily because of IJC restrictions?).

Albeni Falls has been passing inflow since the end of November and will continue to do so through March. End-of-January flood control target is 2060 feet. Normally, Pend Oreille is drafted to about 2051.0 feet in the winter. Starting this year, there is a three year test to only draft to 2055 feet to encourage kokanee to spawn at a higher elevation where there is increased gravel.

Dworshak ended December at elevation 1531.4 feet, which is below its upper rule curve elevation of 1558 feet. However, its end-of-January flood control target is 1526.2 feet and outflow is being increased to 10 kcfs to meet this target. At mid-night on 2 February 1997, the reservoir was at elevation 1520.4 feet in order to meet revised flood control requirements. It should also be noted that, given the high runoff forecast, no flood control transfer occurred between Dworshak and Grand Coulee.

The lower Snake River projects are operating under full operating range except at Ice Harbor and Lower Monumental because of flip-lip construction. A modified range of 734' - 738' at Lower Granite is temporarily in place to provide a channel depth of 14' at Lewiston during dredging operations. After dredging is completed by the end of February, the operating range will be 733' - 738'.

Grand Coulee is being drafted for flood control and is expected to be at elevation 1250 feet by the end of February and 1220 feet by the end of March 1997. At mid-night on 2 February, the reservoir was at elevation 1263.6 feet.

For the upper Snake River, generous water supply forecasts (141% for the Snake above Milner, over 150% for the Payette River, and 180% for the Boise River) have virtually assured the availability of 427 kaf of augmentation water from Reclamation reservoirs above Brownlee. Reclamation expects some natural flow acquisition in Oregon of about 15 - 20 kaf. Also, note that the Idaho Legislature's extension of previous legislation made in 1996 will allow continued release of 427 kaf each year through the year 2000 for instream flow purposes. However, any water obtained from sources outside Idaho reduces Idaho's contribution to the 427 Kaf.

Table 3. Flood Control (FC) Requirements

PROJECTS Date of Max. FC Draft Max. FC Draft Minimum Pool Elevation Maximum Pool Elevation Max.Draft Achieved in 1996 Date of 1996 Max. Draft

Mica 31 March 2454.4 2320.0 2475.0 2408.5 26 April

Arrow 31 March 1399.9 1377.9 1440.0 1395.1 16 March

Duncan 28 Febr. 1807.7 1794.2 1892.0 1808.8 as of 25 April

Libby 15 March 2308.4 2287.0 2459.0 2366.0 26 March

Hungry Horse 30 April 3465.1 3336.0 3560.0 3474.7 8 April

Albeni Falls 30 April 2056.0 2051.0 2062.5 2055.4 7 April

Grand Coulee 30 April 1211.3 1208.0 1290.0 1230.8 as of 29 April

Brownlee 30 April 1976.0 1976.0 2077.0 2017.0 as of 30 April

Dworshak 30 April 1445.0 1445.0 1600.0 1502.4 29 March

III. General Spring/Summer Water Allocation Guidelines

The BiOp provides some overall water allocation guidance regarding spring versus summer flows. The BiOp states that in general, water will be conserved for flow augmentation in July and August, unless doing so would result in significant departures from spring flow objectives. (page 102 of the Opinion). To achieve the conservation of water for summer flows, the BiOp states that the water management plan should generally include operation of all Columbia River reservoirs to refill by June 30, with gradual releases to the draft limits through July and August (page 102).

The BiOp also states NMFS' goal for operations of the Columbia River is to operate the FCRPS in such a way that flow objectives are met during the spring chinook migration and reservoirs are full on June 30 (page 96). Having reservoirs full on June 30, when natural runoff declines, results in the greatest amount of water available for the summer migration period (page 96). Having reservoirs at flood control on April 20 increases the likelihood that spring flow targets will be met and the reservoirs will be full on June 30 (page 96).

In 1997, because of the high runoff forecast, reservoir refill may have to be achieved later than June 30. This may be needed to avoid spill in later periods when inflows are projected to be exceeding powerhouse capacities or when spills are projected to cause dissolved gas levels greater than the state standards. Also, as was the case in 1996, reservoir releases to the draft limits may not start until after July.

IV. Total Dissolved Gas Management

Normal operations and others that are required by research, construction, unit maintenance and services, etc. at COE and BOR projects will be managed to avoid causing total dissolved gas (TDG) saturation levels above state standards to the extent feasible. Any request for additional voluntary spill above and beyond that required in the BiOp or by Court orders and the Federal Energy Regulatory Commission should contain appropriate justification, prediction of the spill impact(s) and any necessary modifications from the States if the requested spill is projected to exceed the standards currently in place. The above does not apply to involuntary spill that is the result of flood control operations, high flows that exceed powerhouse capacities, forced outages, emergency conditions, overgeneration spill, or circumstances when the alternative of not spilling presents unacceptably high safety risks to the structural integrity of the projects.

When involuntary spill is anticipated at several or all projects in the hydropower system, a spill priority list will be developed and implemented (see Appendix 1). The spill priority list will specify the order in which the projects should spill and the allowable spill caps at each of those projects. The overall objective is to avoid creating localized dissolved gas levels where sensitive aquatic organisms, particularly ESA-listed species or their redds are present. In general, projects that show the least propensity to creating high TDG levels will be given first consideration. If necessary, projects in the Willamette River and projects outside the fish migration corridor may also be placed on the spill priority list and requested to spill to within appropriate TDG standards to help achieve the stated objective.

Other TDG management measures to be considered include but are not limited to the following:

storing spill-causing runoff at upstream reservoir(s) whenever possible;
adjusting the schedule of reservoir drafts;
minimizing the number of nonfunctioning turbine units;
distributing the spill over longer hours;
spreading spill to other projects;
operating turbines outside the 1% peak efficiency flow range;
changing spillway gate settings and/or spill patterns;
operating mainstem pools to the optimum flip-lip design criteria;
avoiding voluntary spill that produces excess TDG during fish passage periods;
revising or rescheduling activities to occur during low flow periods;
curtailing spill at selected dams to provide temporary relief;
operating lower Snake River reservoirs above MOP;
use of groundwater recharge to reduce spill; and
transporting fish past critical reaches.

The COE and BOR will continue to monitor dissolved gas in the forebay and tailwater areas of all their mainstem Columbia and Snake River projects and make them available to all interested parties through the CROHMS data base and the TMT homepage. Other dams where spill is frequently scheduled will also be monitored. The plan of action for TDG monitoring is provided as an appendix to the Corps Fish Passage Plan. Winter monitoring may also be implemented below projects where the potential for controlling spill exists. The COE will continue to develop and test regional dissolved gas abatement strategies and monitor their effects on the ecosystem in the framework of overall water resources management.

Spill will be adjusted as needed based on all relevant information, including real-time and predicted TDG, flow, biological monitoring, and fish movement. Given the high spring runoff forecast for 1997, there is high potential for high involuntary spill this year, leaving room for limited management options in May and June. Although the concept of seasonal trade-off has been agreed to in May 1996 by Oregon and Washington Departments of Environmental Quality, there currently is no well-established mechanism in place nor fully-tested criteria to support sound decisions on impacts to listed species with TDG levels in the 120% - 125% range now versus exposure at significantly higher levels later. The additional flexibility afforded by this trade-off option will be fully explored with assistance from the Dissolved Gas Team (DGT). In the meantime, TDG reduction will continue to be primarily limited to flow storage and release strategies, implementation of spill priority lists and other measures already mentioned above where and when applicable. The detailed TDG Management Plan for 1997 is attached as Appendix 2.

V. Transportation

During the spring season fish collected at Lower Granite, Little Goose, and Lower Monumental will be transported. The transport of fish collected at McNary may be considered if high TDG levels prevail for extended periods and/or in the presence of obvious symptoms of gas bubble trauma. To the extent that flow and spill management impacts the number of fish collected and transported, the TMT will make a concerted effort to consider fish movement and transportation percentage goal in all decisions on meeting seasonal flow objectives. [Add summer transportation plans.]

VI. Operations for Research and Demonstration Projects

Project operations planned in conjunction with the activities listed below will be discussed and coordinated at the weekly TMT meetings as needed. In general, the conduct of research at mainstem projects will be subordinate to the higher priority of ensuring the best possible downstream passage conditions for listed species.

Transportation
Juvenile Survival
Surface Bypass/Collection
Spill Tests for the Dissolved Gas Abatement Study

Details of project operations at for fishery purposes at Corps projects are provided in the COE's Fish Passage Plan. Special operations with potential impact to project performance are listed in Table 4.

Table 4. Special Operations for Fishery Research

Projects Special Operations Start/End Date

Bonneville Hydroacoutic Evaluation 4/1 - 7/31

Bonneville FGE Evaluation x

Bonneville Radio Telemetry Study 4/1 - 7/31

Bonneville Radio Tracking of Squawfish 4/1 - 7/15

Bonneville Spill Test 2/17 - 2/21

Bonneville Lamprey Research x

Bonneville Predator/Prey Study x

The Dalles Spill Efficiency Test 4/28 - 7/14

The Dalles Blocked Thrasrack Evaluation 4/26 - 7/14

The Dalles Hydroacoustic Evaluation 3/17 - 8/1

The Dalles Spillway Survival Study 3/31 - 4/11

The Dalles Predator/Prey Study

John Day Spillway Deflector Construction 9/1 - 4/30/98

John Day Surface Bypass Collector Study 5/5 - 7/12

John Day Hydroacoustic Evaluation 3/17 - 3/28

John Day Balloon Tag Evaluation 4/14 - 5/4

John Day Adult Attraction Spill Study 7/14 - 10/31

John Day Evaluation of Hydraulic Sills 8/1 - 11/30

John Day Radio Telemetry Study

John Day Predator/Prey Study

McNary North Shore Fish Ladder 1`2/1 - 3/15

McNary Installation of Bypass Screens ongoing thru 4/30

McNary Spill Test 2/3 - 2/7

McNary VES Evaluation 4/24 - 7/31

McNary Gatewell Debris Testing x

McNary Adult Passage Evaluation x

McNary PIT Tag System 4/1 - 12/15

McNary Gas Bubble Disease Research x

Ice Harbor Spillway Deflector Construction ongoing - 3/1/97

Ice Harbor Spill Test 3/1 - 3/7

Ice Harbor Deflector Test 3/17-3/31

Ice Harbor Hydroacoustic Evaluation 4/13 - 8/31

Ice Harbor Radio Tag Study 4/25 - 6/11

Ice Harbor Adult Passage Study 4/1 - 6/30

Ice Harbor Gas Trauma Evaluation 4/13 - 8/31

Lower Monumental Spill Test 3/17 - 3/21

Little Goose Spill Test 4/1 - 6/20

Little Goose PIT Tag Study 4/1 - 6/4

Little Goose Spillway Survival Study 4/1 - 4/14

Little Goose Hydroacoustic Evaluation 4/13 - 6/20

Lower Granite Surface Bypass Collector Modifications ongoing - 3/30

Lower Granite Spill Test 4/1 - 6/20

Lower Granite Surface Bypass Collector Operation 4/1 - 10/31

Lower Granite Hydroacoustic Evaluation 4/13 - 8/16

Lower Granite Radio Tagging Study 4/14 - 8/16

Lower Granite Fish Condition Evaluation 4/1 - 4/13

Lower Granite Reach Survival Study 4/1 - 10/31

VII. Other Operations Proposals

The TMT will implement flow, spill and reservoir storage operations using the biological specifications in the BiOp. In-season adjustments will be made if and when allowed in the BiOp based on real-time conditions. Some examples of cases and conditions where the TMT was explicitly given some in-season flexibility included the following:

reservoir draft for flood control (page 95)
additional storage water release from Brownlee operation, (page 101)
flood control shift (page 101)
summer reservoir drafts (page 102)
actual start/end dates of flow augmentation season (page 103)
spill at collector projects (page 105)

As outlined in the TMT Guidelines, the TMT will evaluate properly documented and timely submitted proposals to improve fish passage and survival conditions. Proper procedures for submitting proposals and the form for doing so are contained in the Guidelines. Recommendation for changing the method by which flow targets, as stated in the BiOp, will or will not be met must be accompanied by an assessment of the short- and long-term impacts of those changes.

Although the highest priority for the TMT remains the care of listed anadromous species, efforts will be made to also accommodate the needs of other Columbia Basin fish and wildlife as well, if possible and when generally consistent with the BiOp.

VIII. Spring Operations (April-June)

The FCRPS will be operated to achieve the BiOp seasonal flow objectives at Lower Granite and McNary within the water allocation priorities mentioned above. The flow objectives shown in Table 5 are seasonal averages. All reasonable effort will be made to meet these seasonal averages.

These averages will also be shaped to mimic an average natural hydrograph over the season (see Table 13), maintaining the same total spring runoff volume as forecasted. The reconstituted natural hydrograph may be used for guidance purposes to define operation in-season.

Table 5. Biological Opinion's Spring Flow Objectives

(based on January water supply forecasts)

Periods Snake River at Lower Granite Snake River at Lower Granite Columbia River at McNary Dam Columbia River at McNary Dam

Periods Flows Periods Flows

Spring 4/10-6/20 85-100 kcfs 4/20-6/30 220-260 kcfs

Spring 1996 4/10-6/20 100 kcfs 4/20-6/30 260 kcfs

The spring flow objective at Lower Granite is based on the April final volume runoff forecast (modified in-season with the final May forecast) and using the sliding scale provided in the BiOp. In 1997, based on the current (January) April-July runoff forecast of 33.0 maf at Lower Granite (which is greater than 20 maf), the average spring flow objective will be at least 100 kcfs. . It is expected that the April final volume forecast used as a basis in the BiOp will confirm this average flow level.

The spring flow objective at McNary is based on the January-July volume runoff forecast for The Dalles and another sliding scale provided in the BiOp. In 1997, based on the January-July runoff forecast of 138.0 maf at The Dalles (which is greater than 105 maf) , the average spring flow objective will be at least 260 kcfs. After flow augmentation begins, McNary's average daily outflow on weekends will be managed to be no less than 80% of the week's average weekday outflow to minimize daily fluctuations. No such restriction exists outside the main juvenile migration season.

The COE and BOR will inform the TMT regarding expected Brownlee operation given flood control requirements and upper Snake releases. The BiOp states that, if necessary to meet the flow objectives at Lower Granite, Idaho Power Company may be requested to draft Brownlee Reservoir to an elevation of 2069 feet during May and maintain that elevation for the remainder of the spring period.

The lower Snake River reservoirs will be operated within one foot of the minimum operating pool (MOP) range from April 10 until adult fall chinook salmon begin entering the lower Snake River (late August). The operating ranges are as shown in Table 6.

Table 6. Lower Snake River Reservoirs Operating Ranges

Reservoirs MOP Normal Operating Range

Lower Granite 733 - 734 733 - 738

Little Goose 633 - 634 633 - 638

Lower Monumental 537 - 538 537 - 540

Ice Harbor 437 - 438 437 - 440

Slight changes to these operating ranges may be adopted because of dredging, navigation, adult passage, and other requirements. At the time of this writing, the following requirements are anticipated (see Table 7):

Table 7. Expected Lower Snake River Operating Ranges in 1997

(TO BE UPDATED)

Projects 1997 Operating Range

Lower Granite xxx

Little Goose x

Lower Monumental x

Ice Harbor x

The draft to MOP will be achieved in a manner to avoid exceeding state TDG standards, if possible. This will be accomplished through proper timing of the draft at each individual reservoir, proper sequencing of the operation, and controlling the draft rate.

The COE will operate John Day pool between elevation 262.5 feet (5.5 feet above minimum operating pool) and 264.0 feet from May 1 until August 31. This elevation range will be maintained for as long as possible without impacting irrigators around the reservoir. The pool will be raised as needed to ensure that irrigators are not adversely affected. Use of the John Day pool to help in controlling TDG conditions downstream from the project will also be considered.

During the juvenile spring/summer chinook migration season (April 10 - June 20 in the Snake River and April 20 - June 30 in the Columbia River), the Corps will spill at all projects, including collector projects, in an attempt to achieve a fish passage efficiency (FPE) target of 80%. The percent spill needed to achieve that target is provided in Table 8, as spelled out in the Opinion. Spill periods are 24 hours at Ice Harbor, The Dalles and Bonneville Dams, and 1800 - 0600 at all other projects. Spill-for-fish-passage will, however, be subjected to the state standards for TDG as determined by the spill caps. Spill caps for the 120% TDG level are also listed in Table 8.

Table 8. Percent Instantaneous Spill to Achieve 80% FPE and Spill Caps for 120% TDG (Spring)

Projects LWG LGS LMN IHR MCN JDA TDA BON*

%Spill 80 80 81 27 50 33 64 100 (*)

Spill Cap, kcfs 45 50 40 25** 120 55** 300 100

NOTES:

(*) An 80% FPE level is not obtainable at Bonneville Dam given a daytime spill cap of 75 kcfs and the current low fish guidance efficiency levels. The 75 kcfs daytime spill cap in conjunction with the nighttime spill limit of 100% limits obtainable spring FPE to 74%.

(**) Does not reflect improvement due to new deflectors installation

It is anticipated that the states will grant the same standards waivers as in 1996, i.e. 120% TDG in the tailrace, 115% in the forebay of the next downstream dam, and a maximum of 125% for no more than 2 hours.

To minimize high TDG conditions throughout the system, a spill priority list will be developed and implemented. The list shown in Appendix 1 will be reviewed by the DGT prior to its use. It will then be updated as needed based on real-time as well as predicted TDG data and fish movement and biological conditions.

The BiOp requires that during any week in which unregulated weekly average flows at Lower Granite Dam are projected to be less than 100 kcfs, no spill [for-fish-passage] shall occur at Lower Granite Dam; during any week in which unregulated weekly average flows at Lower Granite Dam are projected to be less than 85 kcfs, no spill shall occur at Lower Granite, Little Goose, and Lower Monumental dams, unless the TMT recommends that spill occur.

The BiOp also states that the best condition for an evaluation of the effects and efficacy of spill to improve in river survival would be for a single spill regime to prevail throughout the spring migration season. Therefore, the TMT may recommend that spill occur under certain conditions, including when the number of fish arriving at the projects are significant and when the flows are expected to reach trigger levels during most of the spring season. For 1997, flows are projected to be over 100 Kcfs most of the spring; therefore it is likely that spill will occur at all three of those projects during that period.

IX. Summer Operations (July-August)

The FCRPS will be operated to achieve the BiOp seasonal flow objectives at Lower Granite and McNary (see Table 9) within the water allocation priorities described above and within the reservoir draft limits provided below. In this context, the FCRPS refers to "the 14 [federal] dams and reservoirs, all of which were constructed between 1938 and 1975" in the Columbia River Basin (page 33). The dates indicated are for planning purposes and the flow objectives are seasonal average goals (page 103). Actual timing of flow augmentation will be determined in-season by the TMT.

Table 9. Biological Opinion's Summer Flow Objectives

Snake River at LWG Snake River at LWG Columbia River at at MCNry Columbia River at MCN

Dates Flows Dates Flows

Summer 6/21-8/31 55 kcfs(*) 7/1-8/31 200 kcfs

(*) To be confirmed by final May forecast

The summer flow objective at Lower Granite uses the BiOp's sliding scale based on the April-July runoff forecast for Lower Granite. The 1997 average summer flow objective is at least 55 kcfs at Lower Granite based on the April-July runoff forecast of 45.4 maf. It is expected that this target flow level will be confirmed by the final May forecast for the April-July runoff at Lower Granites. In the lower Columbia River, although the best biological information supports 200 kcfs as providing reduced mortality benefits for subyearling chinook salmon, decreased numbers of actively migrating fish during late August with respect to the total annual run may dictate that use of available water may be preferable during other times of the juvenile migration, or limited in order to reduce impacts upon resident fish.

Draft limits are placed on reservoirs to ensure that operations for anadromous fish do not place at risk other portions of the Columbia Basin ecosystem and the resident fish and wildlife that rely on the reservoirs (see Table 10). Libby may be drafted to a deeper elevation to provide flows for sturgeon spawning in accordance with the BiOp. The Libby draft for sturgeon, however, does not affect the summer draft limits. According to the State of Montana, the summer reservoir draft limits shown below for Libby and Hungry Horse are not sufficient to adequately protect the native species and other imported resources at these projects and in the river reaches below them. The Confederated Salish and Kootenai Tribes have reached the same conclusion. Preliminary indications are that the Independent Scientific Advisory Board (ASAB) may also recognize harm from the summer draft operation.

Table 10. BiOp's Interim Summer Reservoir Draft Limits (in feet) Through August 31

Grand Coulee Libby Hungry Horse Dworshak

1280 2439 3540 1520

In 1995 and 1996, the Libby-Arrow swap has been executed that minimized spill at Upper Columbia projects and made it possible for Libby to stay full many more weeks into the summer. The potential for repeating this beneficial, volume neutral operation may be reexamined in 1997, subject to concurrence from Canada.

Within the confines of the BiOp, the TMT will use a real-time process for flow augmentation to account for early or extended timing of downstream migration, based on information provided by fisheries managers. The TMT may recommend deeper draft if necessary to meet flow objectives depending on the circumstances of the runoff and the salmon migration conditions (e.g., a low water year that is one in a series of low water years and an out-migrating population of fish that represents a strong year class) (page 102).

In general, lower summer elevations will only be recommended when the upper rule curve goals were not met on April 20 at Grand Coulee and Albeni Falls, or when The Dalles April-August unregulated runoff is expected to be less than 65 MAF. (page 102). Other criteria for recommending exceedence of draft limits may also be developed in consultation with all affected parties. Based on the high runoff forecast for 1997 however, the need for reservoir drafts to meet target flows appears to be less than in previous years. Therefore, in instances where seasonal flow objectives are in fact projected to be exceeded, the TMT may recommend some relaxation of the draft requirements mentioned above.

The BOR will provide 427 kaf of flow augmentation water from its projects above Brownlee Reservoir in 1997 This water will be provided from uncontracted storage, rental water, and power head storage (if necessary). Delivery will be based on TMT recommendations, very likely in the early July through August period. Several other state and federal agencies are also currently trying to find additional water from the upper Snake River watershed. This includes efforts to secure water from Owyhee Reservoir and the Skyline Farms Project.

Flow regulation at Dworshak in conjunction with the grouting, which will have an impact on lower Snake River flows, has been modeled in the 60-year flow projection model runs performed by the COE's Power Branch. The details of the grouting operation itself are provided in Appendix 3. A critical element of the flow regulation is the waiver for TDG to be obtained from the state of Idaho. The model study assumed a project outflow limit of 14 kcfs (no waiver). Depending on the actual runoff conditions, higher Dworshak releases than 14 kcfs may be necessary.

During the fall chinook migration season (June 21 to August 31 in the Snake River and July 1 to August 31 in the Columbia River) the COE will spill at all non-collector projects to achieve a fish passage efficiency target of 80%. Spill periods are 24 hours at Ice Harbor, The Dalles and Bonneville Dams, and 1800 - 0600 at all other projects. The following proportions of flow have been calculated to achieve the desired 80% FPE during the summer (see Table 11); they are subject to changes based on better fish guidance information:

Table 11. Percent Instantaneous Spill to Achieve 80% FPE and Spill Caps for 120% TDG (Summer)

Projects LWG LGS LMN IHR MCN JDA TDA BON

Percent Spill (%) 0 0 0 70 0 86 64 100(*)

Spill Cap, kcfs 45 50 40 25** 120 55** 300 100

NOTES:

(*) As mentioned earlier, an 80% FPE level is not obtainable at Bonneville Dam given a daytime spill cap of 75 kcfs and the current low fish guidance efficiency levels. The 75 kcfs daytime spill cap in conjunction with the nighttime spill limit of 100% limits obtainable spring FPE to 74%. This spill cap limits obtainable summer FPE at Bonneville to 59% when nighttime spill is 100% and if there is no limitation on TDG levels. The spill levels listed above that are necessary to achieve an 80% FPE may be limited by the 115/120 % TDG standards. The applicable spill caps designed to meet these standards are also shown on Table 10.

(**) Does not reflect improvement due to new deflectors installation

X. Water Temperature Control

Timely summer drafts of cold water from Dworshak will be considered in an attempt to lower water temperatures in the lower Snake River. This will be accomplished in close coordination with the US Fish and Wildlife Service to ensure that the water temperature requirements of the Clearwater River fish hatcheries are not severely affected. Also, water temperature requirements associated with rearing conditions in the Clearwater River will be determined in cooperation with the Nez Perce Tribe. In the past, a release temperature of about 50 degrees F has been found acceptable by all parties. Unless otherwise agreed to by USFW and the Nez Perce, a similar water temperature level will be used for a start. (More on this by CRITFC)

XI. Outlook for Meeting Flow Objectives in 1997

Based on the runoff forecasts of 33.0 maf (152% of average) for the April-July period at Lower Granite, and 138.0 maf (130% of average) for the January-July period at The Dalles, the Lower Granite and McNary spring flow objectives are projected to be 100 kcfs and 260 kcfs, respectively, using the sliding scales noted above. The summer objectives are 55 kcfs and 200 kcfs, for Lower Granite and McNary, respectively.

As shown below (Table 12), using the same volume runoff forecasts, project spring average flows are expected to be in excess of the BiOp flow objectives at both Lower Granite and McNary. This projection is based on the following assumptions:

(TO BE UPDATED)

reservoirs are near flood control elevations on April 30,
reservoirs are operated to be close to full by June 30, and
reservoirs are operated within the draft limits described above and on page 95 of the Opinion.

Table 12. Prognostics for Meeting 1997

Spring and Summer Flow Objectives

(TO BE UPDATED)

Periods: 4/10-6/20 6/21-8/31

Lower Granite

Projected Outflow, kcfs 111 47

Seasonal Flow Objective, kcfs 100 55 ***

Meet Objective? Yes no

McNary

Projected Outflow, kcfs 310* 205**

Seasonal Flow Objective, kcfs 260* 200**

Meet Objective? Yes yes

* 4/20-6/30 ** 7/1-8/31 *** revised to 53.5 kcfs

The 1997 summer flow objective of 55 kcfs (based on the final January forecast) at Lower Granite is projected to be met through about mid-July only; flows in August are projected to be in the mid-30s kcfs. At McNary, the 200 kcfs summer flow objective is projected to be met through early August, if storage reservoirs are modeled to be as close to full as possible on June 30. After early August, flows are projected to recede to about 135 kcfs by early September. (to be updated)

Note that the prognostics provided above came from a planning analysis done last April and are not based on mimicking the reconstituted natural hydrograph as a prime objective. In general, meeting both a natural hydrograph and the BiOp seasonal flow objectives could present a conflicting requirement. For reference purposes, the average natural hydrograph with the same seasonal runoff volume as forecasted is defined in Table 13. Meeting the summer flow objectives of 55 kcfs at Lower Granite and 200 kcfs at McNary on a seasonal basis as called for in the BiOp appears almost certain. However, even for a large runoff year like 1997, meeting the same flow objectives on a weekly basis through the end of August will not be feasible. Part of the reason was the fact that the BiOp flow objectives were based on biological requirements, not on today's August weekly flow conditions. Because of this limitation and conflicting goals, the TMT's first priority will be to meet the seasonal flow objectives on a weekly basis for as long as possible.

Table 13. Equivalent Average Natural Hydrograph

using Average Regulated Flows (kcfs)

Week ending LWG Base MCN Base LWG1997 MCN1997

APR07 68 180 105 320

APR14 72 190 111 338

APR21 78 195 120 346

APR28 88 210 135 373

MAY05 98 230 151 409

MAY12 102 240 157 426

MAY19 107 245 164 435

MAY26 122 270 188 480

JUN02 128 280 197 497

JUN09 132 280 203 497

JUN16 124 276 191 490

JUN23 110 270 169 480

JUN30 93 250 143 444

JUL07 78 230 120 409

JUL14 60 202 92 359

JUL21 43 180 66 320

JUL28 33 164 51 291

AUG04 30 150 46 266

AUG11 27 145 42 258

AUG18 23 128 35 227

AUG25 23 124 35 220

AUG31 23 122 35 217

SEP07 28 120 43 213

SEP14 31 118 48 210

SEP21 33 110 51 195

SEP28 32 109 49 194

SEP30 30 108 46 192

APR-JUL 21467 kaf 54834 kaf 33000 kaf(*) 97409 kaf

APR-SEP 24813 kaf 69763 kaf 38144 kaf 123930 kaf(**)

(*) Official runoff forecast for Apr-Jul at Lower Granite

(**) Apr-Sep. runoff forecast at The Dalles minus Deschutes, John Day and Umatilla Rivers

XII. Other TMT-related Items

Operation of Snake River Pools at Minimum Operating Pool (MOP). Excursion from the MOP operating range may be allowed in special cases. These cases include attempts to control high TDG levels in a measurable way, to provide obligatory channel depths for waterborne navigation, or to generally control flows downstream for specific purposes (studies, emergencies, etc.).

Operation of Turbines Outside of 1% of Peak Efficiency. This requirement is applicable to the Snake River Projects March 15-November 30 period and March 15-October 31 for the Columbia. Temporary excursion may be allowed to increase fish collection in emergency situations, or to control spill in order to effectively stay within the TDG state standards, or in legitimate cases defined in the BPA's System Load Shaping Guidelines to enable operating turbines outside peak efficiency. These guidelines are routinely included as part of the COE's Fish Passage Plan.

Biological Monitoring. Data on fish movement and fish conditions collected by the fishery agencies and others will be used in TMT decision-making by establishing a threshold level of change that triggers or precludes actions. .Biological monitoring data are currently reported on the Fish Passage Center's homepage (see below).

Relationship to Other Listed and non-listed Species. Every effort will be made to avoid direct negative impacts to other listed and non-listed species in the Northwest. This includes impacts to the bald eagle, Snake River snails and lanx, and the Kootenai River white sturgeon. Reservoir drafting can impact the bald eagle food chain, notably at Lake Roosevelt, Jackson Lake, Cascade Reservoir, and Libby and Hungry Horse and downstream river reaches below those two projects. Moderate and steady summer flows in the Snake River below Milner Dam have been identified in the Fish and Wildlife Service's biological opinion as important to snail survival. Very slow rampdown of flows is requested to avoid stranding. The Biological Opinion for sturgeon and snails will be honored.

In each case, TMT will endeavor to simultaneously meet the requirements of all listed species through careful timing of river flows and reservoir operations. The USGS will be consulted and requested to provide an update on the status of the Bull Trout listing process so that the TMT can determine if this may be a factor in the 1997 operations season. As stated earlier, ESA-listed fish species will have priority in considering reservoir operations, but requirement of non-listed anadromous and resident fish will also be taken into consideration to the extent feasible.

Scheduled Outages. The operating agencies will make every effort to publicize scheduled equipment outages, stay on published schedules, and work cooperatively to adjust to unforeseen problems that can and do occur.

Additional Water Acquisitions/Purchases.. At this time, given the prospect of high runoff, BOR has no plan to purchase additional upper Snake water to meet lower Snake 1997 summer flow targets.

Canadian Operation - BPA and B.C. Hydro will continue to explore ways to shape flow releases from Canada that are revenue neutral and meet needs on both side of the border.

Emergency Protocol. Protocols for use during emergencies situations are attached as Appendix 3 to this Water Management Plan.

Information Posted on the TMT Internet HomePage. The address of this homepage is: http://www.npd-wc.usace.army.mil/TMT/welcome.html. The information listed below will be processed into database files and graphic or tabular displays and placed on the Corps' TMT Internet pages.

- TMT Meeting Agendas and Notes

- Biological Opinion Requirements-

- TMT Guidelines

- 1997 Water Management Plan

- 1997 TDG Management Plan

- Emergency Protocols

- Current Spill Priority List

- Miscellaneous Review Material

- NWS Water Supply Forecast

- Weekly Project Operations

- Water Control Data (flow, spill, TDG, etc.)

- NPD Generation Status

- Biological Data

- Run size projections, number of fish passed and projected mortality

- Other information and data useful for in-season management

- Proposals and comments

The Fish Passage Center has a homepage (http://www.teleport.com/`fpc/) with related information as shown below:

Biological Data

- Juvenile salmon and steelhead cumulative passage index graphs

- Juvenile salmon and steelhead cumulative passage index tables

- Hatchery release schedules

- Smolt transportation summary tables

- Gas bubble trauma tables for juvenile salmon and steelhead

- Adult salmon and steelhead ladder counts

Physical Data

- Project flow and spill volume tables for mainstem dams

- Water temperature profiles at key storage and mainstem sites

- Dissolved gas saturation tables for mainstem dams and in-river sites

FPC Documents and Publications

- System Operational Requests (SORs)

- FPC Weekly Reports

Other home pages also provide pertinent information to TMT activities and are directly linked to the TMT home page maintained by the COE. The other home pages include University of Washington, BPA, Battelle, and Northwest Power Planning Council.

XIII. Epilogue

This Water Management Plan is developed for year-round use by the TMT in planning and scheduling reservoir operations that may impact the Columbia River Basin fish resources. In all matters coming before it, the highest priority for the TMT remains the care of ESA-listed anadromous species. The TMT will, however, make a concerted effort to accommodate other fish and wildlife needs when possible. For example, when no measurable ESA salmon survival changes can be detected or demonstrated between two alternative operational scenarios, the TMT will choose the alternative with the lowest impact on other fish and wildlife. The TMT will also make every effort to resolve technical disagreements expeditiously via referrals to the IT and, if necessary, final resolution at the Executive Committee level. TMT meeting minutes will incorporate written records of actions regarding alternatives considered, those that are selected, and rationale for the selection.

If there are any questions about this document, contact Cindy Henriksen at (503) 326-3745 email Cynthia.A.Henriksen@NPD01.usace.army.mil or Bolyvong Tanovan at (503) 326-3764, email Bolyvong.S.Tanovan@NPD01.usace.army.mil.

APPENDIX 1. SPILL PRIORITY LIST

Sample actual teletype to projects and BPA on Spill Priority

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

BON R 052396 1154 SN LWG LGS LMN IHR BPC BPA NPB NPD NPW NPC

CO BON TDA JDA MCN BPA BPC NPD NPB NPC NPP

ATTENTION: COLUMBIA RIVER PROJECTS AND BPA

SUBJECT: SPILL CAPS AND PRIORITY

1. THE FOLLOWING LIST CONTAINS ALLOWABLE SPILL LEVELS TO BE USED IN AN ATTEMPT TO CONTROL TOTAL DISSOLVED GAS (TDG) TO 120%, 125%, 130% AND 135%. PROJECTS ARE LISTED IN A SEQUENTIAL ORDER, PLACING FIRST PRIORITY ON SPILLING AT LOWER COLUMBIA PROJECTS, MID-COLUMBIA PROJECTS AND SNAKE PROJECTS IN THAT ORDER. SPILL OUTSIDE THE FISH MIGRATION CORRIDOR (HGH, WILLAMETTE, ETC) IS ALSO INCLUDED.

2. WHEN SYSTEM-WIDE TDG IS AT OR BELOW 120%, REQUEST THAT THE VOLUNTARY SPILL FOR FISH PASSAGE TO ACHIEVE NMFS'S BIOLOGICAL OPINION FPE TARGET OF 80% BE DISTRIBUTED IN THE FOLLOWING ORDER:

SPILL UP TO THE 120% TDG SPILL CAPS AT BON, TDA, JDA, MCN, IHR, LMN, LGS AND LWG;

SPILL UP TO THE 110% TDG SPILL CAPS AT PROJECTS OUTSIDE THE FISH MIGRATION CORRIDOR: RIS, PRD, WEL, WAN, RRH, CHJ, GCL, DWR IN THAT ORDER;

SPILL UP TO THE 120% TDG SPILL CAPS AT PROJECTS WHERE STATE STANDARDS WAIVERS HAVE BEEN GRANTED: RIS, PRD, WAN, RRH IN THAT ORDER;

SPILL UP TO THE 120% TDG SPILL CAPS AT DWR IF RELEASE FROM DWR IS FOR USE IN MAINTAINING 100 KCFS FLOW AT LWG;

SPILL UP TO THE 110% TDG SPILL CAPS AT HGH AND WILLAMETTE PROJECTS.

3. WHEN SYSTEM-WIDE TDG EXCEEDS 120% TDG, THEN TRY TO CONTROL SYSTEMWIDE TDG TO 125%, THEN TO 130% AND SO ON BY SPILLING UP TO THE SPILL CAPS INDICATED FOR THOSE TDG LEVELS, AT LOWER COLUMBIA, MID-COLUMBIA, SNAKE, HGH, AND WILLAMETTE PROJECTS IN THAT ORDER.

4. SPILL CAPS FOR VARIOUS APPLICABLE TDG LEVELS ARE PROVIDED BELOW. THEY WILL BE UPDATED AS NEEDED BASED ON REALTIME TDG INFORMATION AND ACTUAL FISH MOVEMENT.

........SPILL CAPS LEVELS .....

PROJECT

TDG% 110 120 125 130 135

TDA 90 300 400 500 600

BON (*) 70 100 190 250 320

(*) LIMIT DAYTIME BON SPILL TO 100 KCFS AS MUCH AS POSSIBLE. DAYTIME START

1 HR BEFORE SUNRISE AND ENDS HALF-HR BEFORE SUNSET (FOR THIS AND ALL OTHER PROJECTS).

MCN 50 120 200 250 340

JDA 25 55 75 90 130

RIS (**) 40 90 150 200 270

(*) LIMIT DAYTIME RIS SPILL TO 100 KCFS

PRD (**) 25 40 100 210 350

WEL (**) 10 25 45 130 250

WAN (**) 10 20 50 100 200

RRH (**) 5 20 30 150 300

CHJ 15 35 60 130 270

GCL 5 10 20 30 45

DWR (***) 4 11 15 17 21

(***) LIMIT DWR SPILL TO 11 KCFS UNTIL FURTHER NOTICE

LWG 20 45 65 80 100

LGS 30 50 80 100 130

LMN 10 40 70 100 120

IHR 15 25 35 55 75

HGH (****) 3 3 3 3 3

(****) LIMIT HGH SPILL TO 3 KCFS UNTIL FURTHER NOTICE

HCR. 4 6 6 6 6

LOP/DEX 5 5 5 5 5

GPR 2 2 2 2 2

FOS 9 9 9 9 9

DET/BCL 7 7 7 7 7

TDG % 110 120 125 130 135

5. SPILL DICTATED BY FLOOD CONTROL RELEASE REQUIREMENT MAY OCCASIONALLY EXCEED THE SPILL CAPS LISTED ABOVE. IN CASE OF DOUBT, PLEASE CONSULT WITH THE RCC FOR FURTHER GUIDANCE.

6. AS A REMINDER, LEVELS OF SPILL FOR-FISH-PASSAGE- OUTLINED IN THE BIOLOGICAL OPINION ARE GIVEN BELOW. THIS MEANS SPILLING THE FOLLOWING PERCENTAGES OF THE OUTFLOW AS LONG AS SPILL DOES NOT EXCEED THE SPILL CAPS PROVIDED FOR THE 120% TDG LEVEL:

DAMS LWG LGS LMN IHR MCN JDA TDA BON

% FLOW,SPRING 80 80 81 27 50 33 64 *

% FLOW, SUMMER 70 86 64 *

(*) AT BON, SPILL 75 KCFS DURING DAYTIME AND SPILL UP TO 120% TDG. NIGHTTIME. DAYTIME IS BETWEEN ONE HOUR BEFORE SUNRISE AND HALF AN HOUR BEFORE SUNSET. NORMALLY, SPILL PERIODS ARE 24 HOURS AT IHR, TDA AND BON AND 12 HOURS (1800-0600) AT ALL OTHER PROJECTS, UNLESS REQUIRED OTHERWISE FOR RESEARCH AND TESTS. SPRING PERIOD IS 4/10 - 6/20 FOR SNAKE PROJECTS, 4/20-63/30 FOR LOWER COLUMBIA PROJECTS. SUMMER PERIOD IS 6/21-8/31 FOR LOWER SNAKE AND 7/1-8/31 FOR LOWER COLUMBIA.

NOTE THAT SPILL IS CURRENTLY DICTATED BY RESEARCH AND/OR TEST REQUIREMENTS AT LWG AND TDA, AS DISCUSSED AT TMT ON 1 MAY. DO NOT CHANGE SPILL AT THOSE PROJECTS UNLESS SPECIFICALLY REQUESTED UNDER SEPARATE TELETYPE, OR BECAUSE OF FLOOD CONTROL REQUIREMENT.

7. AS ANOTHER REMINDER, REQUEST THAT TURBINE UNITS BE OPERATED WITHIN THEIR 1% PEAK EFFICIENCY FLOW RANGE AS MUCH AS POSSIBLE. GIVEN THE CURRENT HIGH FLOW CONDITIONS, EXCURSION FROM THAT RANGE, WHILE DETRIMENTAL TO FISH, IS ALSO NOT LIKELY TO BRING ENOUGH SPILL RELIEF TO OFFSET THE RISK POSED BY THE EXCURSION.

8. THIS REGULATION SUPERSEDES OTHER PREVIOUS REGULATIONS ISSUED ON SPILL PRIORITY AND SPILL CAPS. IT IS PROMPTED BY CURRENT HIGH FLOWS AND IT IS GENERALLY CONSISTENT WITH FISH PASSAGE CENTER'S SOR NO. 96-9 DATED MAY 17, 1996 AND RELATED DISCUSSIONS HELD AT TMT MEETING OF 22 MAY 1996.

COORDINATION WITH BPA SCHEDULERS WAS THROUGH BOB NEAL. RCC POINTS OF CONTACT ARE BOLYVONG TANOVAN AND CINDYHENRIKSEN.

BOLYVONG TANOVAN

CENPD/RCC

RRCBT/SPILCAP3

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

APPENDIX 2. 1997 Total Dissolved Gas Management Plan

APPENDIX 3. DWORSHAK GROUTING

APPENDIX 4. EMERGENCY PROTOCOLS

Locations	1997 January Final	1997 January Final	1996 April Final	1996 April Final
	Maf	% average	Maf	% average
Libby (Jan-Jul)	7.16	112%	7.89	123%
Hungry Horse (Jan-Jul)	2.97	131%	2.82	124%
Grand Coulee (Jan-Jul)	76.8	121%	75.0	119%
Dworshak (Apr-Jul)	3.98	147%	2.66	99%
Lower Granite (Jan-Jul)	45.4	153%	36.2	122%
Lower Granite (Apr-Jul)	33.0	152%	21.9	101%
The Dalles (Jan-Jul)	138.0	130%	126.0	119%
The Dalles (Apr-Aug)	110.0	130%	86.9	103%

PROJECTS	Date of Max. FC Draft	Max. FC Draft	Minimum Pool Elevation	Maximum Pool Elevation	Max.Draft Achieved in 1996	Date of 1996 Max. Draft
Mica	31 March	2454.4	2320.0	2475.0	2408.5	26 April
Arrow	31 March	1399.9	1377.9	1440.0	1395.1	16 March
Duncan	28 Febr.	1807.7	1794.2	1892.0	1808.8	as of 25 April
Libby	15 March	2308.4	2287.0	2459.0	2366.0	26 March
Hungry Horse	30 April	3465.1	3336.0	3560.0	3474.7	8 April
Albeni Falls	30 April	2056.0	2051.0	2062.5	2055.4	7 April
Grand Coulee	30 April	1211.3	1208.0	1290.0	1230.8	as of 29 April
Brownlee	30 April	1976.0	1976.0	2077.0	2017.0	as of 30 April
Dworshak	30 April	1445.0	1445.0	1600.0	1502.4	29 March

Projects	Special Operations	Start/End Date
Bonneville	Hydroacoutic Evaluation	4/1 - 7/31
Bonneville	FGE Evaluation	x
Bonneville	Radio Telemetry Study	4/1 - 7/31
Bonneville	Radio Tracking of Squawfish	4/1 - 7/15
Bonneville	Spill Test	2/17 - 2/21
Bonneville	Lamprey Research	x
Bonneville	Predator/Prey Study	x
The Dalles	Spill Efficiency Test	4/28 - 7/14
The Dalles	Blocked Thrasrack Evaluation	4/26 - 7/14
The Dalles	Hydroacoustic Evaluation	3/17 - 8/1
The Dalles	Spillway Survival Study	3/31 - 4/11
The Dalles	Predator/Prey Study
John Day	Spillway Deflector Construction	9/1 - 4/30/98
John Day	Surface Bypass Collector Study	5/5 - 7/12
John Day	Hydroacoustic Evaluation	3/17 - 3/28
John Day	Balloon Tag Evaluation	4/14 - 5/4
John Day	Adult Attraction Spill Study	7/14 - 10/31
John Day	Evaluation of Hydraulic Sills	8/1 - 11/30
John Day	Radio Telemetry Study
John Day	Predator/Prey Study
McNary	North Shore Fish Ladder	1`2/1 - 3/15
McNary	Installation of Bypass Screens	ongoing thru 4/30
McNary	Spill Test	2/3 - 2/7
McNary	VES Evaluation	4/24 - 7/31
McNary	Gatewell Debris Testing	x
McNary	Adult Passage Evaluation	x
McNary	PIT Tag System	4/1 - 12/15
McNary	Gas Bubble Disease Research	x
Ice Harbor	Spillway Deflector Construction	ongoing - 3/1/97
Ice Harbor	Spill Test	3/1 - 3/7
Ice Harbor	Deflector Test	3/17-3/31
Ice Harbor	Hydroacoustic Evaluation	4/13 - 8/31
Ice Harbor	Radio Tag Study	4/25 - 6/11
Ice Harbor	Adult Passage Study	4/1 - 6/30
Ice Harbor	Gas Trauma Evaluation	4/13 - 8/31
Lower Monumental	Spill Test	3/17 - 3/21
Little Goose	Spill Test	4/1 - 6/20
Little Goose	PIT Tag Study	4/1 - 6/4
Little Goose	Spillway Survival Study	4/1 - 4/14
Little Goose	Hydroacoustic Evaluation	4/13 - 6/20
Lower Granite	Surface Bypass Collector Modifications	ongoing - 3/30
Lower Granite	Spill Test	4/1 - 6/20
Lower Granite	Surface Bypass Collector Operation	4/1 - 10/31
Lower Granite	Hydroacoustic Evaluation	4/13 - 8/16
Lower Granite	Radio Tagging Study	4/14 - 8/16
Lower Granite	Fish Condition Evaluation	4/1 - 4/13
Lower Granite	Reach Survival Study	4/1 - 10/31

Periods	Snake River at Lower Granite	Snake River at Lower Granite	Columbia River at McNary Dam	Columbia River at McNary Dam
	Periods	Flows	Periods	Flows
Spring	4/10-6/20	85-100 kcfs	4/20-6/30	220-260 kcfs
Spring 1996	4/10-6/20	100 kcfs	4/20-6/30	260 kcfs

Reservoirs	MOP	Normal Operating Range
Lower Granite	733 - 734	733 - 738
Little Goose	633 - 634	633 - 638
Lower Monumental	537 - 538	537 - 540
Ice Harbor	437 - 438	437 - 440

Projects	1997 Operating Range
Lower Granite	xxx
Little Goose	x
Lower Monumental	x
Ice Harbor	x

Projects	LWG	LGS	LMN	IHR	MCN	JDA	TDA	BON*
%Spill	80	80	81	27	50	33	64	100 (*)
Spill Cap, kcfs	45	50	40	25**	120	55**	300	100

	Snake River at LWG	Snake River at LWG	Columbia River at at MCNry	Columbia River at MCN
	Dates	Flows	Dates	Flows
Summer	6/21-8/31	55 kcfs(*)	7/1-8/31	200 kcfs

Projects	LWG	LGS	LMN	IHR	MCN	JDA	TDA	BON
Percent Spill (%)	0	0	0	70	0	86	64	100(*)
Spill Cap, kcfs	45	50	40	25**	120	55**	300	100

Periods:	4/10-6/20	6/21-8/31
Lower Granite
Projected Outflow, kcfs	111	47
Seasonal Flow Objective, kcfs	100	55 ***
Meet Objective?	Yes	no

McNary
Projected Outflow, kcfs	310*	205**
Seasonal Flow Objective, kcfs	260*	200**
Meet Objective?	Yes	yes

Week ending	LWG Base	MCN Base	LWG1997	MCN1997
APR07	68	180	105	320
APR14	72	190	111	338
APR21	78	195	120	346
APR28	88	210	135	373
MAY05	98	230	151	409
MAY12	102	240	157	426
MAY19	107	245	164	435
MAY26	122	270	188	480
JUN02	128	280	197	497
JUN09	132	280	203	497
JUN16	124	276	191	490
JUN23	110	270	169	480
JUN30	93	250	143	444
JUL07	78	230	120	409
JUL14	60	202	92	359
JUL21	43	180	66	320
JUL28	33	164	51	291
AUG04	30	150	46	266
AUG11	27	145	42	258
AUG18	23	128	35	227
AUG25	23	124	35	220
AUG31	23	122	35	217
SEP07	28	120	43	213
SEP14	31	118	48	210
SEP21	33	110	51	195
SEP28	32	109	49	194
SEP30	30	108	46	192

APR-JUL	21467 kaf	54834 kaf	*33000 kaf()**	97409 kaf
APR-SEP	24813 kaf	69763 kaf	38144 kaf	123930 kaf()**

PROJECT
TDG%	110	120	125	130	135

TDA	90	300	400	500	600
BON (*)	70	100	190	250	320

PRD (**)	25	40	100	210	350
WEL (**)	10	25	45	130	250
WAN (**)	10	20	50	100	200
RRH (**)	5	20	30	150	300
CHJ	15	35	60	130	270
GCL	5	10	20	30	45
DWR (***)	4	11	15	17	21

LWG	20	45	65	80	100
LGS	30	50	80	100	130
LMN	10	40	70	100	120
IHR	15	25	35	55	75
HGH (****)	3	3	3	3	3

HCR.	4	6	6	6	6
LOP/DEX	5	5	5	5	5
GPR	2	2	2	2	2
FOS	9	9	9	9	9
DET/BCL	7	7	7	7	7
TDG %	110	120	125	130	135

DAMS	LWG	LGS	LMN	IHR	MCN	JDA	TDA	BON
% FLOW,SPRING	80	80	81	27	50	33	64	*
% FLOW, SUMMER				70		86	64	*