Due to the number of lines represented on some of the graphs in the Seattle District H&H Branch Homepage, the following tips should assist you in correctly reading the graphs.

1. The Zero Damage and Major Damage lines in red are related to the stage of the river. The river stage is the elevation, in feet, of the river at the remote gage location.

2. The flow, in cubic feet per second (cfs), represents the amount or volume of water passing the remote gage at the time of collection.

3. Stage and flow are related based on rating tables created and maintained by the US Geological Survey. Every stage reading can be directly linked with a flow or volume of water currently in the river.

4. Most graphs have a specific color representing various types of data.

• Reservoir or Lake Elevation: Blue

• Reservoir Outflow or River Stage: Red

• Reservoir Inflow: Green

• River Flow: Cyan(Light Blue)

• Air Temperature: Black

• Incremental Precipitation: Yellow

If there are multiple gages on a single graph, such as basin summaries, then the color scheme listed above may not be followed.

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Last Updated on Thursday, June 05, 1997 05:24:25 PM