Thermalito Diversion Pool Reservoir
As of July 16, 2026, Thermalito Diversion Pool is holding 194 acre-ft of water — 579% of normal storage for this date. Storage data refreshed throughout the day.
Thermalito Diversion Pool
Thermalito Diversion Pool is a man-made reservoir located in California, USA. It was built in 1967 as part of the Oroville Dam project to provide flood control, irrigation, and hydroelectric power generation. The pool has a storage capacity of 285,000 acre-feet of water and is fed by several rivers, including the Feather and Yuba Rivers. In addition, the pool receives water from the Sierra Nevada snowpack, which acts as a crucial source of water for the surrounding agricultural community. The Thermalito Diversion Pool is also used for recreational activities such as fishing, boating, and swimming. The surface flow is regulated by the Oroville Dam release and the pool is also used for power generation through a hydroelectric facility.
Daily levels at Thermalito Diversion Pool
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
Storage
acre-ft · code 2
Pool Elevation
ft · code 1
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Thermalito Diversion Pool -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Butte C Nr Chico Ca | 161 cfs | → |
| Yuba R Nr Marysville Ca | 522 cfs | → |
| Deer C Nr Smartville Ca | 3 cfs | → |
| N Yuba R Bl Goodyears Bar Ca | 170 cfs | → |
| Sacramento R A Colusa Ca | 8,570 cfs | → |
| Bear R Nr Wheatland Ca | 25 cfs | → |
About Thermalito Diversion Pool
Where does the data for Thermalito Diversion Pool come from?
Daily storage, pool elevation, and release rates are sourced from USGS, USBR, and USACE monitoring stations. Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
Storage observations are updated daily by the operating agency. The 15-day weather forecast refreshes throughout the day. Snoflo caches and renders the most recent observation -- check the "as of" timestamp on the storage card.
What does the Hazard hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card below for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.