Prepared: 07OCT2026 at 8:20
Gillham Lake Top Flood Pool: 569.0
Cossatot River (GLLA4) Top Conservation Pool: 502.0
Total
Time Elevation Tailwater Release
Date CS/CDT (ft-NGVD29) (ft-NGVD29) (cfs)
__________________________________________________________________________
30SEP2026 0900 500.43 429.90 39
30SEP2026 1000 500.43 429.89 39
30SEP2026 1100 500.43 429.90 39
30SEP2026 1200 500.42 429.90 39
30SEP2026 1300 500.42 429.89 39
30SEP2026 1400 500.41 429.90 39
30SEP2026 1500 500.44 429.89 39
30SEP2026 1600 500.42 429.90 39
30SEP2026 1700 500.42 429.89 39
30SEP2026 1800 500.42 429.90 39
30SEP2026 1900 500.42 429.90 39
30SEP2026 2000 500.42 429.89 39
30SEP2026 2100 500.41 429.90 39
30SEP2026 2200 500.41 429.89 39
30SEP2026 2300 500.42 429.90 39
30SEP2026 2400 500.41 429.90 39
01OCT2026 0100 500.41 429.90 39
01OCT2026 0200 500.41 429.90 39
01OCT2026 0300 500.41 429.90 39
01OCT2026 0400 500.41 429.89 39
01OCT2026 0500 500.41 429.90 39
01OCT2026 0600 500.41 429.90 39
01OCT2026 0700 500.41 429.90 39
01OCT2026 0800 500.40 429.90 39
01OCT2026 0900 500.40 429.72 39
01OCT2026 1000 500.40 429.72 39
01OCT2026 1100 500.40 429.71 39
01OCT2026 1200 500.41 429.72 39
01OCT2026 1300 500.41 429.72 39
01OCT2026 1400 500.42 429.72 39
01OCT2026 1500 500.43 429.72 39
01OCT2026 1600 500.43 429.72 39
01OCT2026 1700 500.43 429.72 39
01OCT2026 1800 500.43 429.72 39
01OCT2026 1900 500.44 429.72 39
01OCT2026 2000 500.43 429.72 39
01OCT2026 2100 500.44 429.72 39
01OCT2026 2200 500.44 429.72 39
01OCT2026 2300 500.43 429.72 39
01OCT2026 2400 500.43 429.72 39
02OCT2026 0100 500.43 429.72 39
02OCT2026 0200 500.43 429.72 39
02OCT2026 0300 500.43 429.72 39
02OCT2026 0400 500.43 429.72 39
02OCT2026 0500 500.43 429.72 39
02OCT2026 0600 500.43 429.72 39
02OCT2026 0700 500.43 429.72 39
02OCT2026 0800 500.43 429.72 39
02OCT2026 0900 500.43 429.71 39
02OCT2026 1000 500.43 429.72 39
02OCT2026 1100 500.43 429.72 39
02OCT2026 1200 500.44 429.72 39
02OCT2026 1300 500.43 429.71 39
02OCT2026 1400 500.44 429.72 39
02OCT2026 1500 500.44 429.72 39
02OCT2026 1600 500.43 429.72 39
02OCT2026 1700 500.43 429.71 39
02OCT2026 1800 500.43 429.72 39
02OCT2026 1900 500.43 429.72 39
02OCT2026 2000 500.43 429.71 39
02OCT2026 2100 500.43 429.72 39
02OCT2026 2200 500.43 429.72 39
02OCT2026 2300 500.42 429.72 39
02OCT2026 2400 500.42 429.72 39
03OCT2026 0100 500.43 429.71 39
03OCT2026 0200 500.42 429.72 39
03OCT2026 0300 500.42 429.72 39
03OCT2026 0400 500.42 429.72 39
03OCT2026 0500 500.42 429.72 39
03OCT2026 0600 500.42 429.72 39
03OCT2026 0700 500.42 429.72 39
03OCT2026 0800 500.42 429.72 39
03OCT2026 0900 500.42 429.72 39
03OCT2026 1000 500.43 429.71 39
03OCT2026 1100 500.42 429.72 39
03OCT2026 1200 500.42 429.71 39
03OCT2026 1300 500.42 429.71 39
03OCT2026 1400 500.42 429.71 39
03OCT2026 1500 500.42 429.71 39
03OCT2026 1600 500.42 429.71 39
03OCT2026 1700 500.42 429.71 39
03OCT2026 1800 500.42 429.71 39
03OCT2026 1900 500.42 429.71 39
03OCT2026 2000 500.42 429.71 39
03OCT2026 2100 500.42 429.71 39
03OCT2026 2200 500.42 429.71 39
03OCT2026 2300 500.42 429.71 39
03OCT2026 2400 500.42 429.71 39
04OCT2026 0100 500.42 429.71 39
04OCT2026 0200 500.42 429.71 39
04OCT2026 0300 500.42 429.72 39
04OCT2026 0400 500.42 429.71 39
04OCT2026 0500 500.42 429.71 39
04OCT2026 0600 500.42 429.72 39
04OCT2026 0700 500.42 429.71 39
04OCT2026 0800 500.42 429.71 39
04OCT2026 0900 500.42 429.72 39
04OCT2026 1000 500.42 429.71 39
04OCT2026 1100 500.43 429.71 39
04OCT2026 1200 500.42 429.71 39
04OCT2026 1300 500.43 429.71 39
04OCT2026 1400 500.42 429.71 39
04OCT2026 1500 500.42 429.72 39
04OCT2026 1600 500.43 429.71 39
04OCT2026 1700 500.43 429.71 39
04OCT2026 1800 500.43 429.71 39
04OCT2026 1900 500.42 429.72 39
04OCT2026 2000 500.42 429.71 39
04OCT2026 2100 500.42 429.72 39
04OCT2026 2200 500.42 429.71 39
04OCT2026 2300 500.42 429.71 39
04OCT2026 2400 500.42 429.71 39
05OCT2026 0100 500.42 429.71 39
05OCT2026 0200 500.41 429.71 39
05OCT2026 0300 500.42 429.71 39
05OCT2026 0400 500.42 429.71 39
05OCT2026 0500 500.41 429.71 39
05OCT2026 0600 500.41 429.71 39
05OCT2026 0700 500.41 429.71 39
05OCT2026 0800 500.42 429.71 39
05OCT2026 0900 500.42 429.71 39
05OCT2026 1000 500.42 429.70 39
05OCT2026 1100 500.43 429.70 39
05OCT2026 1200 500.42 429.70 39
05OCT2026 1300 500.41 429.71 39
05OCT2026 1400 500.41 429.71 39
05OCT2026 1500 500.42 429.72 39
05OCT2026 1600 500.42 429.71 39
05OCT2026 1700 500.42 429.71 39
05OCT2026 1800 500.41 429.71 39
05OCT2026 1900 500.41 429.71 39
05OCT2026 2000 500.40 429.72 39
05OCT2026 2100 500.40 429.72 39
05OCT2026 2200 500.40 429.72 39
05OCT2026 2300 500.40 429.71 39
05OCT2026 2400 500.40 429.71 39
06OCT2026 0100 500.40 429.71 39
06OCT2026 0200 500.40 429.71 39
06OCT2026 0300 500.40 429.71 39
06OCT2026 0400 500.40 429.72 39
06OCT2026 0500 500.40 429.72 39
06OCT2026 0600 500.40 429.72 39
06OCT2026 0700 500.40 429.72 39
06OCT2026 0800 500.40 429.72 39
06OCT2026 0900 500.40 429.71 39
06OCT2026 1000 500.40 429.70 39
06OCT2026 1100 500.40 429.71 39
06OCT2026 1200 500.40 429.71 39
06OCT2026 1300 500.40 429.71 39
06OCT2026 1400 500.39 429.72 39
06OCT2026 1500 500.40 429.72 39
06OCT2026 1600 500.39 429.72 39
06OCT2026 1700 500.39 429.71 39
06OCT2026 1800 500.39 429.71 39
06OCT2026 1900 500.39 429.71 39
06OCT2026 2000 500.39 429.72 39
06OCT2026 2100 500.39 429.72 39
06OCT2026 2200 500.39 429.72 39
06OCT2026 2300 500.38 429.72 39
06OCT2026 2400 500.38 429.71 39
07OCT2026 0100 500.38 429.71 39
07OCT2026 0200 500.38 429.72 39
07OCT2026 0300 500.38 429.71 39
07OCT2026 0400 500.38 429.72 39
07OCT2026 0500 500.38 429.72 39
07OCT2026 0600 500.38 429.72 39
07OCT2026 0700 500.38 429.72 39
07OCT2026 0800 500.38 ---- ---
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