John Black Pond Dam dam
John Black Pond Dam
John Black Pond Dam, located in Holmes, Mississippi, is a privately owned dam regulated by the Mississippi Department of Environmental Quality. The primary purpose of this earth dam, with a height of 20 feet and a storage capacity of 90 acre-feet, is for recreation. Despite being uncontrolled, the dam's hazard potential is currently listed as undetermined, with a moderate risk assessment rating of 3.
The dam, part of the Vicksburg District, has not been rated for condition assessment and lacks emergency action plans. However, it has not been modified in recent years and does not have any associated structures or outlet gates. Although the risk is considered moderate, there are no specific risk management measures in place. Overall, John Black Pond Dam presents an intriguing case study for water resource and climate enthusiasts due to its unique design and regulatory oversight in the state of Mississippi.
As water resource and climate enthusiasts delve into the details of John Black Pond Dam, they will uncover a fascinating story of a privately owned recreational structure that plays a vital role in the local ecosystem. With its modest height and storage capacity, the dam's condition assessment and emergency response preparedness remain areas of concern. The moderate risk assessment adds a layer of complexity to the dam's management and highlights the importance of proactive risk mitigation strategies in the face of potential hazards.
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 John Black Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Harland Creek Nr Howard | 3,340 cfs | → |
| Big Black River At West | 226 cfs | → |
| Abiaca Creek At Cruger | 44 cfs | → |
| Yockanookany River Nr Kosciusko | 28 cfs | → |
| Yockanookany River Nr Ofahoma | 84 cfs | → |
| Pearl River Nr Lena | 1,110 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near John Black Pond Dam.
Track John Black Pond 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 John Black Pond Dam
Where does the data for John Black Pond 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 Undetermined 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 John Black Pond Dam.