Reservoir Report

Success Dam reservoir

California, USA USBR
Today high
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Tonight low
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Current storage
53,069acre-ft
% of normal
23%
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Next 24 hours
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Right now · current storage
Success Dam
USBR · SCC
53,069 acre-ft
As of 2026-07-14
Seasonal avg
43,204
Record max
92,775
24h change
-1.3%
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Success Dam -- California reservoir
Success Dam California
About this reservoir

Success Dam

Success Dam is located in Tulare County, California and was built in 1961 as a part of the Kaweah River flood control plan. The dam is 203 feet high and 1,100 feet long, and it impounds the Success Lake with a capacity of 82,000 acre-feet. The hydrology of the dam is supplied by the Kaweah River, which is fed by snowpack from the Sierra Nevada Mountains. The dam provides irrigation water for local agriculture, and recreational activities such as fishing, boating, and camping. The surface flow of the Kaweah River is also used for hydroelectric power generation. During periods of drought, the lake is used as a water supply for the city of Porterville. In recent years, the dam has undergone upgrades to improve its safety and reliability in the face of increasing drought and climate change.

StateCalifornia
OperatorUSBR
Site IDSCC
Percent of normal23%
Last updated2026-07-14
Records since2003
Storage trends

Daily levels at Success Dam

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 Success Dam -- 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 Success Dam.

FAQ

About Success Dam

Where does the data for Success Dam 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.