Wishon reservoir
Wishon
Wishon is a small community located in Fresno County, California. The area is well known for its history, including the development of the Wishon Dam in the early 1900s. The dam provides water to the surrounding area, including agricultural land and recreational sites. The hydrology of the area is heavily influenced by the Sierra Nevada mountains, with snowpack providing critical water sources for the region. Several surface flow providers, including the San Joaquin River and two creeks, contribute to the area's water supply. The Wishon Reservoir is a popular destination for fishing and camping, while the surrounding land is used for agriculture and grazing. Despite challenges related to drought and climate change, the Wishon area continues to play an important role in California's water and recreational industries.
Daily levels at Wishon
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 Wishon -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Marble Fork Kaweah R Ab Horse C Nr Lodgepole Ca | 7 cfs | → |
| San Joaquin R Bl Friant Ca | 333 cfs | → |
| Nf Willow C Nr Sugar Pine Ca | 416 cfs | → |
| Mf San Joaquin R Nr Mammoth Lakes Ca | 82 cfs | → |
| Hot C A Flume Nr Mammoth Lakes Ca | 55 cfs | → |
| Big C Div Nr Fish Camp Ca | 0 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Wishon.
Boat launches
See all →
Campgrounds
See all →
Fishing spots
See all →
River runs
See all →
About Wishon
Where does the data for Wishon 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.