Bon Tempe reservoir
Bon Tempe
Bon Tempe is a reservoir located in Marin County, California, USA. It was built in 1949 and is part of the Marin Municipal Water District, providing water to 10,000 homes and businesses in the area. Bon Tempe is fed by surface water flowing from the Lagunitas Creek watershed, and its hydrology is impacted by the Mediterranean climate of the region. The reservoir is also dependent on the snowpack of Mount Tamalpais for its water supply. The area surrounding Bon Tempe is primarily used for recreational activities such as hiking, fishing, and camping. Additionally, the Bon Tempe reservoir plays an important role in maintaining the agricultural industry of Marin County by providing irrigation water to nearby farms.
Daily levels at Bon Tempe
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 Bon Tempe -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Corte Madera C A Ross Ca | 1 cfs | → |
| Redwood C A Hwy 1 Bridge A Muir Beach Ca | 0 cfs | → |
| Lagunitas C A Sp Taylor State Pk Ca | 8 cfs | → |
| Novato C A Novato Ca | 1 cfs | → |
| Olema C A Vedanta Bridge A Olema Ca | 1 cfs | → |
| Lagunitas C Nr Pt Reyes Station Ca | 9 cfs | → |
About Bon Tempe
Where does the data for Bon Tempe 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.