George Gillespie Dam dam
George Gillespie Dam
George Gillespie Dam, located in Simpson, Mississippi, is a privately-owned structure managed by the Mississippi Department of Environmental Quality. This earth dam, with a height of 17 feet and a storage capacity of 82 acre-feet, primarily serves for recreational purposes. The dam features an uncontrolled spillway and is classified as having a low hazard potential with a moderate risk assessment.
Despite its modest size and low hazard potential, George Gillespie Dam plays a crucial role in water resource management and climate resilience in the region. With its state-regulated status and regular inspections, the dam ensures the safety of its surroundings and contributes to the overall environmental health of the area. The dam's location in the Vicksburg District further highlights its significance in the local water infrastructure network.
For water resource and climate enthusiasts, George Gillespie Dam offers a fascinating case study in the intersection of human-made structures and natural ecosystems. Its design, construction, and regulatory oversight provide valuable insights into sustainable dam management practices and the importance of balancing recreational needs with environmental conservation. As a key element in the water management landscape of Mississippi, George Gillespie Dam stands as a testament to the ongoing efforts to safeguard water 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 George Gillespie Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Pearl River Nr Rockport | 5,700 cfs | → |
| Strong River At D`Lo | 129 cfs | → |
| Pearl River At Jackson | 2,430 cfs | → |
| Lynch Creek At Jackson | 207 cfs | → |
| Hanging Moss Creek Nr Jackson | 203 cfs | → |
| Pearl River Nr Monticello | 4,510 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near George Gillespie Dam.
Boat launches
- Spillway Road Rankin County
- East River Road Rankin County
- West River Road Jackson
- Madison Landing Circle 101, Ridgeland
- Fannin Landing Circle Rankin County
Track George Gillespie 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 George Gillespie Dam
Where does the data for George Gillespie 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 George Gillespie Dam.