North Umpqua River flows
The flows represented by this gage station are in the North Umpqua River's Wild and Scenic Reach downstream of the North Umpqua Hydroelectric Project and Boulder Creek (a wilderness stream).
Real-Time flow data for this site is available from gage station 14316500 funded by PacifiCorp and managed by the USGS.
Forecasted flows for a nearby tributary, Steamboat Creek, are provided by NOAA's Northwest River Forecast Center.
Tentative 2024 schedule of planned waterway maintenance which may affect flow in bypass reaches or trigger fish salvage activity at the North Umpqua Hydroelectric Project. Maintenance has been planned to occur during the Settlement Agreement preferred periods to the greatest extent possible. Dates are tentative and can change without notice due to weather, access, equipment, personnel, maintenance progress, and other issues. The dates listed are the approximate date of canal or powerhouse shutdown, but ramping and flow changes may impact adjacent days as well. During some outages it may be possible to keep “fish flow” in the waterway, which means sufficient flow to keep fish alive, generally 2-20 cfs depending on the waterway, season, and weather. Note also that high natural flows and unplanned shutdowns for emergency responses and brief maintenance events may occur at any time without advance notice. For details contact Rich Grost, PacifiCorp, 541-498-2617. For details contact Rich Grost, PacifiCorp, 541-498-2617. Version 7: 9-6-24.
Waterway |
Approximate dates of shutdown |
Bypass reach flow affected? |
Date of fish salvage |
Fish liberated to |
Notes |
|
|---|---|---|---|---|---|---|
Lemolo 1 |
None planned |
yes |
||||
Lemolo 2 |
2/16 – 10/1 |
yes |
10/1-31 |
na |
Increased bypass flow due to canal flow limitation to support flume and trestle maintenance |
|
Lemolo 2 |
10/1 – 12/31 |
yes |
na |
Lemolo Lake, Toketee Lake |
Fish salvage takes 4-5 days for canal, sag pipe, tailrace; Lemolo Lake is preferred liberation site |
|
Clearwater 1 |
6/12 |
yes |
na |
na |
Fish flow retained in canal for 1-day outage |
|
Clearwater 2 |
4/8 – 26 6/13 |
Yes yes |
4/9 na |
|
Clearwater 2 4bay na |
Completed |
Toketee (one turbine) |
7/15 – 8/2 |
If inflows exceed 900 cfs |
na |
na |
Toketee Unit 2 rebuild; Units 1 and 3 remain operating |
|
Toketee (two turbines) |
No longer planned this year |
If inflows exceed 500 cfs |
na |
na |
Toketee Unit 3 rebuild; Unit 1 remains online |
|
Toketee (all three turbines) |
7/15 – 8/2 (substation work) (TIV install) |
yes |
na |
na |
Three Unit maintenance; no salvage as fish screen precludes most fish from the unsalvageable tunnel which drains to river when dewatered; requires filling Toketee Lake to spill bypass reach flows |
|
Fish Creek |
5/31 – 12/31 |
yes |
na |
na |
Fish screen precludes fish from canal, diversion reduced to <1 cfs to maintain forebay above 3020 ft MSL, canal flow reduced due to capacity limitation at Flume 7 until repairs completed. |
|
Fish Creek |
When natural |
no |
na |
na |
Fish screen precludes fish from canal, diversion generally shut down in summer and fall |
|
Slide Creek |
None planned |
|
|
|
|
|
Soda Springs |
3/25 – 4/4 |
yes |
na |
na |
Fish screen precludes fish, penstock drains to river |
|
Soda Springs fish passage facility |
8/12 - 30 |
no |
na |
adjacent waters (brown trout to Lemolo Lake if time allows) |
No dewatering planned - focus on above-water maintenance of fish screen and brief semi- dewatered maintenance of fish return system and FEB, no fish salvage needed |