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 2022 schedule of planned waterway maintenance which may affect flow in bypass reaches 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, equipment, personnel, construction and maintenance progress, and other issues. The dates listed are the approximate date of canal or powerhouse shutdowns, 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.  Revised 3-10-22.

        

     
     

Waterway

Approximate dates of shutdown

Bypass reach flow affected?

Date of fish salvage

Fish liberated to

Notes

Lemolo 1 GSU 6/27 - 7/1 yes n/a n/a Bypass flow increased but fish flow retained in canal.
Lemolo 2 4/12 - 4/14 possibly n/a n/a Fish flow retained in canal
Lemolo 2 6/1 - 7/1 yes 6/1 -3 Lemolo and Toketee reservoirs; Lemolo 2 forebay Multi-day fish salvage due to 14 miles of canal; then sag pipe tunnel
Clearwater 1 none n/a n/a n/a  
Clearwater 2 5/2 - 5/20 yes 5/2 or 5/3 Clearwater 2 forebay  
Toketee (individual turbines)

1/18 - 2/18

4/1 - 4/22

If inflows exceed 900 cfs n/a n/a Fish screen precludes most fish from unsalvageable tunnel; tunnel drains to river.
Toketee (all 3 turbines) 7/11 - 7/15 yes n/a n/a Fish screen precludes most fish from unsalvageable tunnel; tunnel drains to river.
Fish Creek when natural inflow <130 cfs (~ July-Oct)
no  n/a  n/a  Fish screen precludes fish from canal; canal drains to forebay; diversion generally shut down in summer.

Slide Creek GSU

7/18 - 7/22 no n/a n/a Flow retained in canal; spill at forebay; fish salvage not needed.
Soda Springs 3/10 - 3/12 n/a n/a n/a Penstock headgate maintenance; fish screen precludes fish, penstock drains to river; ramping at night.
Soda Springs fish screen 2/21 - 3/31 no 2/22; actual was 3/2 due to weather Adjacent waters (brown trout to Lemolo Reservoir) Dewater fish screen and supply AWS and downstream passage via spillway and/or log chute; generate through north intake.
Soda Springs fish screen 9/12 - 9/30 no n/a n/a No dewatering planned, only flow transfer to spillway/log chute and north intake to allow de-energized wire tracing.