Jemima K dam
Jemima K
Jemima K is a privately-owned irrigation dam located in Payette River, Idaho. Built in 1974, this earth dam stands at 71.2 feet high, with a hydraulic height of 66.3 feet and a length of 2600 feet. With a storage capacity of 2650 acre-feet, it serves the primary purpose of irrigation for the surrounding area, covering a drainage area of 3.5 square miles.
Despite being in fair condition according to a 2017 assessment, Jemima K poses a significant hazard potential due to its uncontrolled spillway type and the risk of moderate flooding. The dam has experienced regular inspections every four years, with the last one conducted in May 2017. This dam is regulated by the Idaho Department of Water Resources and has state permits for operation, inspection, and enforcement.
Located in Valley County, Idaho, Jemima K plays a crucial role in water resource management for the region, ensuring a stable water supply for agricultural activities. Its design, construction, and operation are all in compliance with state regulations, highlighting the importance of proper infrastructure maintenance and risk management in the face of changing climate conditions.
Dam data reference
Condition Assessment
- Satisfactory
- No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
- Fair
- No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action.
- Poor
- A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency.
- Unsatisfactory
- A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
- Not Rated
- The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Hazard Potential Classification
- High
- Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
- Significant
- Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environmental damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
- Low
- Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
- Undetermined
- Dams for which a downstream hazard potential has not been designated or is not provided.
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 Jemima K -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Lake Fork Payette River Ab Jumbo Cr Nr Mccall Id | 588 cfs | → |
| Nf Payette River At Mccall Id | 1,430 cfs | → |
| Deadwood River Bl Deadwood Res Nr Lowman Id | 85 cfs | → |
| Weiser River Nr Cambridge Id | 777 cfs | → |
| Sf Salmon River Nr Krassel Ranger Station Id | 2,190 cfs | → |
| Middle Fork Payette River Nr Crouch Id | 1,100 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Jemima K.
Boat launches
- Lakeshore Drive 117, Cascade
- Main Street Valley County
- National Forest Development Road 422 Valley County
- Valley County
- Cabarton Road Valley County
Campgrounds
- Lake Cascade State Park
- Horsethief Reservoir State Park
- French Creek Campground - Reserve
- Horsethief Reservoir Public Access - Ifg
- Willow Creek - Siscra
- Amanita
Fishing spots
Track Jemima K in the Snoflo app
Save this dam as a favorite and get the local NOAA / yr.no forecast plus regional flow context wherever you are.
About Jemima K
Where does the data for Jemima K come from?
Structural and regulatory data come from the U.S. Army Corps of Engineers' National Inventory of Dams (NID). Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
NID structural data refreshes annually as the Corps publishes updated assessments. The weather forecast refreshes throughout the day.
What does the Significant 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 dam, 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 Jemima K.