Santiago Creek Reservoir (irvine Lake) Reservoir
Santiago Creek Res (Irvine Lake)
Santiago Creek Reservoir, also known as Irvine Lake, is a man-made reservoir located in Orange County, California. It was created in 1931 by the construction of Santiago Dam, which is the primary surface flow provider for the reservoir. The dam also provides flood control and hydroelectric power. The reservoir is also fed by snowpack from the nearby Santa Ana Mountains.
The lake has a capacity of 25,000 acre-feet and is used for a variety of recreational activities such as fishing, boating, and camping. It also serves as a source of agricultural irrigation for nearby farmland. In recent years, the lake has experienced low water levels due to drought conditions and has been temporarily closed to the public. However, efforts are being made to restore the lake and improve its water quality, and it is expected to reopen for recreational use in the near future.
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 Santiago Creek Res (Irvine Lake) -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Agua Chinon Wash Nr Irvine Ca | · | → |
| Santa Ana R Bl Prado Dam Ca | 82 cfs | → |
| Santiago C A Santa Ana Ca | · | → |
| Sand Cyn C A Irvine Ca | 0 cfs | → |
| Santa Ana R A Santa Ana Ca | · | → |
| Carbon C Bl Carbon Cyn Dam Ca | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Santiago Creek Res (Irvine Lake).
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Santiago Creek Res (Irvine Lake)
Where does the data for Santiago Creek Reservoir (irvine Lake) 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.
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