Lopez Lake reservoir
Lopez Lake
Lopez Lake is a reservoir located in San Luis Obispo County, California. The lake was created in 1969 with the construction of a dam in Arroyo Grande Creek. The primary purpose of the reservoir is to provide drinking water for the area, with additional benefits such as flood control and recreational activities. The hydrology of the lake is influenced by its location in a Mediterranean climate zone, with most of the precipitation occurring during the winter months. The lake is fed by both surface flow and snowpack from the surrounding hills. The area around the lake is primarily used for agriculture, including vineyards and orchards, as well as recreational activities such as camping, boating, and fishing.
Daily levels at Lopez Lake
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
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 Lopez Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Lopez C Nr Arroyo Grande Ca | 3 cfs | → |
| Huasna R Nr Arroyo Grande Ca | 2 cfs | → |
| Santa Maria R A Suey Crossing Nr Santa Maria Ca | · | → |
| Cuyama R Bl Buckhorn Cyn Nr Santa Maria Ca | 12 cfs | → |
| Orcutt C Nr Orcutt Ca | 1 cfs | → |
| Sisquoc R Nr Garey | · | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Lopez Lake.
Campgrounds
- Lopez Lake Rec Area
- Hi Mountain
- Hi Mountain Campground
- Buckeye Camp
- North Beach - Pismo State Beach
- Sapwi
Fishing spots
More reservoirs
Track Lopez Lake 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").
About Lopez Lake
Where does the data for Lopez 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 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.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Lopez Lake.