Rollins reservoir
Rollins
Rollins Reservoir is located in Nevada County, California and was created in 1965 by the construction of the Rollins Dam on the Bear River. The reservoir has a capacity of 56,000 acre-feet and provides water for irrigation, domestic use, and hydroelectric power generation. The Bear River Watershed is the primary contributor to the reservoir's surface flow, with snowpack contributing to the water supply. The reservoir is operated by the Nevada Irrigation District, and its water is used for agricultural purposes such as irrigating crops like apples, grapes, and peaches. Recreational activities include fishing, boating, camping, and hiking. The reservoir is also home to various species of fish, including bass and trout, making it a popular fishing spot for locals and tourists alike.
Daily levels at Rollins
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 Rollins -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Nf American R A North Fork Dam Ca | 93 cfs | → |
| Deer C Nr Smartville Ca | 2 cfs | → |
| Pilot C Bl Mutton Canyon Nr Georgetown Ca | 2 cfs | → |
| Pilot C Ab Stumpy Meadows Res Ca | 3 cfs | → |
| Bear R Nr Wheatland Ca | 23 cfs | → |
| N Yuba R Bl Goodyears Bar Ca | 176 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Rollins.
Boat launches
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Campgrounds
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Fishing spots
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River runs
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About Rollins
Where does the data for Rollins 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.