SUMMARY OF COLUMBIA RIVER FLOOD CONTROL DATA 1 JAN 1999 MCDB ARDB LIB DCDB HGH GCL BRN DWR DWR PROJECT LIMITS Maximum El. MSL 2475.0 1444.0 2459.0 1892.0 3560.0 1290.0 2077.0 1600.0 Minimum El. MSL 2320.0 1378.0 2287.0 1794.2 3336.0 1208.0 1976.0 1445.0 Usable stor.KAF 12053.37100.0 4979.5 1398.6 2982.0 5185.5 975.4 2015.8 CURRENT, 31 DEC. Elevation MSL 2417.7 1431.5 2405.6 1830.7 3522.3 1278.1 2072.0 1533.0 Draft KAF 5606.8 1580.4 2193.9 980.1 825.4 934.5 71.1 1057.0 TO MEET 31 JAN F.C. Feet 0.0 6.8 29.8 0.0 0.0 0.0 0.0 6.8 Kaf 0.0 819.6 908.4 0.0 0.0 0.0 0.0 91.0 Ksfd 0.0 413.2 458.0 0.0 0.0 0.0 0.0 45.9 Cfs over inflow 0 13330 14775 0 0 0 0 1480 FORECASTS, KAF Apr-Jul mp na na na na na na 5730 3501 Apr-Jul % na na na na na na 99% 130% Apr-Aug mp 11710 24230 6620 2007 na 66200 na na Apr-Aug % 102% 104% 104% 98% na 109% na na May-Sep mp na na na na 2057 na na na May-Sep % na na na na 108% na na na FLOOD CONTROL LRC,/a. Drafts, KAF Jan 31 840 2400 3102 850 355 0 0 1148 1148 Feb 28-9 1440 3700 3866 1270 676 279 400 1568 1568 Mar 15 na na 4117 na na na na na na Mar 31 2080 5100 4117 1270 1032 3005 500 2016 1831 Apr 15 2080 5100 na 1270 1203 3939 550 2016 1778 Apr 30 2080 5100 na 1270 1375 4582 600 na na Elevations MSL Jan 31 na 1424.6 2375.7 1839.8 3544.6 1290.0 2077.0 1526.2 1526.2 Feb 28-9 na 1413.2 2345.4 1807.7 3529.6 1286.6 2044.5 1491.5 1491.5 Mar 15 na na 2334.2 na na na na na na Mar 31 na 1399.9 2334.2 1807.7 3511.6 1248.2 2034.6 1445.0 1465.0 Apr 15 na 1399.9 na 1807.7 3502.3 1232.6 2029.4 1445.0 1470.5 Apr 30 na 1399.9 na 1807.7 3492.4 1220.6 2024.1 na na FLOOD CONTROL Drafts, KAF shifted urc's, /b. Jan 31 na na na na na 0 0 1148 Feb 28-9 na na na na na 679 0 1568 Mar 31 na na na na na 3690 0 1831 Apr 15 na na na na na 4602 125 1778 Elevations MSL Jan 31 na na na na na 1290.0 2077.0 1526.2 Feb 28-9 na na na na na 1281.5 2077.0 1491.5 Mar 31 na na na na na 1237.0 2077.0 1465.0 Apr 15 na na na na na 1220.2 2068.0 1470.5 SHIFT POTENTIAL,K 1/ 2/ 3/ 4/ 1/ DWR SYS F.C. MINUS LOC F.C. ie Jan 31 0 0 0 537 POTENTIAL STORAGE SHIFT TO GCL. Feb 28-9 0 279 679 2744 2/ GCL F.C. PLUS 1/. Mar 31 185 3190 3690 4602 3/ BRN F.C. PLUS 2/. Apr 15 238 4177 4727 4602 4/ MAXIMUM TOTAL THAT 2/ or 3/ Apr 30 NO SHIFT ALLOWED BY 30 APRI CAN ADD UP TO. ============================================================================================ AT THE DALLES Peak to volume unreg, Apr-Aug mp 102000 109.4% storage 638 KCFS. May-Aug mp 87401 correction Initial controlled flow- 26746 KAF (ICF) 390 KCFS ============================================================================================ /a. LRC is DWORSHAK LOCAL RULE CURVE. /b. Under certain conditions, the GCL, BRN and DWR rule curves may be "shifted". The rule curves shown are the "maximun" allowable. All or part of the "max" volume may be "shifted". DWR has priority over BRN if all volume can't be shifted. "shifts" will be determined on a case by case basis, from year to year, and month to month. Questions? Russ Morrow, 503-808-3951 or Bruce Glabau, 503-808-3950