Reservoir Report

Casitas reservoir

California, USA USBR
Today high
--
Tonight low
--
Current storage
236,844acre-ft
% of normal
49%
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Right now · current storage
Casitas
USBR · CSI
236,844 acre-ft
As of 2026-05-11
Seasonal avg
159,181
Record max
237,968
24h change
-0.1%
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Casitas -- None reservoir
Casitas None
About this reservoir

Casitas

Casitas in California refer to small, artificially created reservoirs or lakes primarily used for hydroelectric power generation, irrigation, and recreation. The history of these reservoirs dates back to the early 1900s when the demand for water in the region increased due to the growth of agriculture and urbanization. Today, Casitas are managed and operated by various agencies such as Ventura County Watershed Protection District and Casitas Municipal Water District. These agencies are responsible for ensuring the availability of water supply to the residents of the region. Furthermore, Casitas receive water from both surface flow and snowpack providers such as the Santa Ana River and the Ventura River. The reservoirs are also used for recreational purposes such as boating, swimming, and fishing, while the surrounding agricultural lands rely on the reservoirs for irrigation.

StateNone
OperatorUSBR
Site IDCSI
Percent of normal49%
Last updated2026-05-11
Records since2021
Storage trends

Daily levels at Casitas

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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Track Casitas 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 Casitas

Where does the data for Casitas 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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