Don Pedro Reservoir Reservoir
As of July 17, 2026, Don Pedro Reservoir is holding 1,853,543 acre-ft of water — 117% of normal storage for this date. Storage data refreshed throughout the day.
Don Pedro Reservoir
Don Pedro Reservoir is located in Tuolumne County, California, and was constructed in 1971. It is a major water storage facility in the state and provides water to agricultural, industrial, and urban areas. The reservoir is fed by surface water flow from the Tuolumne River and snowpack melt from the nearby Sierra Nevada mountains. The hydrology of the reservoir is managed by the Turlock Irrigation District, which operates the Don Pedro and La Grange dams. The reservoir has a capacity of 2.03 million acre-feet and covers an area of about 13,000 acres. It is used for multiple recreational activities, including fishing, boating, camping, and hiking. The reservoir also provides habitat for various wildlife species, such as bald eagles and black bears.
Daily levels at Don Pedro Reservoir
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 Don Pedro Reservoir -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Turlock Cn Nr La Grange Ca | 1,560 cfs | → |
| Tuolumne R Bl Lagrange Dam Nr Lagrange Ca | 193 cfs | → |
| Modesto Cn Nr La Grange Ca | 1,230 cfs | → |
| Big C Ab Whites Gulch Nr Groveland Ca | · | → |
| Black C Nr Copperopolis Ca | · | → |
| Tuolumne R Bl Early Intake Nr Mather Ca | 136 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Don Pedro Reservoir.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Don Pedro Reservoir
Where does the data for Don Pedro Reservoir 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.