Reservoir Report

Lake Piru reservoir

California, USA USBR
Today high
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Tonight low
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Current storage
71,805acre-ft
% of normal
18%
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Next 24 hours
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Right now · current storage
Lake Piru
USBR · PRU
71,805 acre-ft
As of 2026-06-30
Seasonal avg
60,799
Record max
84,228
24h change
-0.1%
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Lake Piru -- California reservoir
Lake Piru California
About this reservoir

Lake Piru

Lake Piru is situated in Ventura County, California, and it was formed in 1955 with the construction of the Santa Felicia Dam. It is a reservoir that is fed by the Piru Creek, which originates in the San Emigdio Mountains. The Piru Creek provides the lake with its primary source of surface flow, and the area also receives water from snowpacks in the mountains. The lake is used for both agricultural and recreational purposes, with agricultural water being released downstream to irrigate farms, and recreational activities like boating and fishing are popular. The lake is also home to a diverse range of flora and fauna, including birds, fish, and aquatic plants. In recent years, the lake has faced challenges with drought and low water levels, leading to concerns about its long-term sustainability.

StateCalifornia
OperatorUSBR
Site IDPRU
Percent of normal18%
Last updated2026-06-30
Records since2021
Storage trends

Daily levels at Lake Piru

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 Lake Piru -- inflows here typically show up in storage 24-72 hours later.

Around the water

Make a day of it

Boat launches, lakeside camping, fishing access, and other reservoirs near Lake Piru.

FAQ

About Lake Piru

Where does the data for Lake Piru 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.