Reservoir Report

Don Pedro Reservoir reservoir

California, USA USBR
Today high
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Tonight low
--
Current storage
1,853,543acre-ft
% of normal
18%
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Right now · current storage
Don Pedro Reservoir
USBR · DNP
1,853,543 acre-ft
As of 2026-05-16
Seasonal avg
1,566,064
Record max
2,026,152
24h change
-0.4%
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Don Pedro Reservoir -- None reservoir
Don Pedro Reservoir None
About this reservoir

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.

StateNone
OperatorUSBR
Site IDDNP
Percent of normal18%
Last updated2026-05-16
Records since2003
Storage trends

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

Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Don Pedro Reservoir -- inflows here typically show up in storage 24-72 hours later.

Track Don Pedro Reservoir in the Snoflo app

Save this reservoir as a favorite and set push alerts when storage crosses a threshold (e.g. "alert me at 80% of normal").

FAQ

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 above 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.

Premium feature

Favorites and alerts are part of Snoflo Premium. Save reservoirs, set storage thresholds, and get push notifications when conditions cross.

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Manage alerts in the Snoflo app

Custom alerts are configured in the iOS app -- favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.

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