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 2021 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.  Revision 10/13/2021.

        

     
     

Waterway

Approximate dates of shutdown

Bypass reach flow affected?

Date of fish salvage

Fish liberated to

Notes

Lemolo 1 6/7-25, 2021 yes 6/7-9, 2021 Lemolo Lake  
Lemolo 1 8/31-9/2, 2021 yes n/a n/a Fish water retained in canal.
Lemolo 2 n/a        
Clearwater 1  5/3-21, 2021 yes 5/3-4, 2021 Clearwater 1 forebay  
Clearwater 2 n/a        
Toketee (1 of 3 turbines; 1 at a time)

1/4-31, 2021

10/12-30, 2021

11/9-27, 2021

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 together) 10/1-20, 2021 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.

Slide Creek

1/11-29, 2021 yes n/a n/a Fish water retained in canal, fish salvage not needed.
Slide Creek GSU TBA-2022? yes   Toketee Lake? ? Fish water may be retained in canal so fish salvage may not be needed.
Soda Springs 9/11-30, 2021 yes n/a n/a Penstock adjustment; fish screen precludes fish, penstock drains to river.
Soda Springs fish screen TBA-2022? partial    Adjacent waters Dewater fish screen and supply AWS and downstream passage via spillway and/or log chute; generate through north intake 9/4-11, 2021 (until powerhouse shutdown).
Project-wide 2/1-4, 2021 Lemolo 1 & 2, Clearwater 1 & 2, Slide Creek n/a n/a Fish water retained in canals; outage is for work on transmission lines throughout fire area.
Project-wide (emergency fire response) 7/6 - 16, 2021 Lemolo 1 & 2, Clearwater 1 & 2, Slide Creek n/a n/a Fish water retained in canals; outage is to de-energize transmission lines for emergency wildland firefighting.