Johnny Johnson Dam dam
Johnny Johnson Dam
Johnny Johnson Dam, located in Butte, South Dakota, is a privately owned earth dam that stands at a height of 17 feet and spans 670 feet in length. Completed in 2008, this dam serves as a crucial structure on the South Fork Moreau River-TR, providing storage capacity of 275 acre-feet with a normal storage level of 86 acre-feet. Despite its uncontrolled spillway type and low hazard potential, the dam has a moderate risk assessment rating, signaling the need for ongoing monitoring and risk management measures.
Managed by the South Dakota Department of Environment and Natural Resources, Johnny Johnson Dam is subject to state regulations, permitting, inspections, and enforcement. While the dam's condition is currently not rated, it is essential for water resource and climate enthusiasts to keep a close eye on any developments regarding its safety and maintenance. With its strategic location and importance in managing water resources in the region, Johnny Johnson Dam is a noteworthy structure that plays a significant role in South Dakota's infrastructure.
As a relatively new construction, Johnny Johnson Dam represents modern engineering techniques and design principles, with the National Resources Conservation Service (NRCS) credited as the designer of this vital water management structure. With its capacity to store and regulate water flow in the South Fork Moreau River-TR, the dam contributes to flood control, irrigation, and overall water resource management in the area. As a focal point for water resource and climate enthusiasts, Johnny Johnson Dam serves as a reminder of the importance of sustainable infrastructure development in safeguarding our natural resources for future generations.
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 Johnny Johnson Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Little Missouri R At Camp Crook Sd | 9 cfs | → |
| Inlet Canal Above Belle Fourche Reservoir Sd | 6 cfs | → |
| Belle Fourche R Near Fruitdale Sd | 19 cfs | → |
| Belle Fourche R At Wy-Sd State Line | 11 cfs | → |
| Redwater River Above Belle Fourche Sd | 31 cfs | → |
| Horse Cr Above Vale Sd | 13 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Johnny Johnson Dam.
Track Johnny Johnson Dam 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 Johnny Johnson Dam
Where does the data for Johnny Johnson Dam 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 Low 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 Johnny Johnson Dam.