Jandls Dam dam
Jandls Dam
Jandls Dam, also known as Petersburg Jail Pond, is a recreational earth dam located in Prince George, Virginia. This dam, regulated by the Department of Conservation and Recreation, stands at a height of 16 feet and has a storage capacity of 86 acre-feet. Its primary purpose is for recreation, offering opportunities for activities such as fishing and boating on the TR-SECOND SWAMP river or stream.
Despite its low hazard potential, Jandls Dam is not currently rated for its condition assessment. The dam has not been modified since its completion, and its last inspection date is not specified. While it meets state permitting, inspection, and enforcement requirements, information regarding emergency action plans, risk assessments, and inundation maps is lacking. With a limited profile of associated structures and no outlet gates specified, Jandls Dam is a relatively simple yet essential part of the local water resource infrastructure.
Enthusiasts of water resources and climate in the area may find Jandls Dam to be an intriguing site for recreational activities and potential environmental impact assessments. As a regulated structure with a focus on recreation, its location and features offer opportunities for further exploration and study. With a somewhat mysterious history and limited detailed data available, Jandls Dam presents an interesting case study for those interested in the intersection of water management, infrastructure design, and environmental stewardship in the state of Virginia.
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 Jandls Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Appomattox River At Matoaca | 126 cfs | → |
| Stony Creek Near Dinwiddie | 41 cfs | → |
| Nottoway River Near Stony Creek | 52 cfs | → |
| Chickahominy River Near Providence Forge | 24 cfs | → |
| Blackwater River Near Dendron | 2 cfs | → |
| Nottoway River Near Sebrell | 118 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Jandls Dam.
Boat launches
- Magazine Road 930, Petersburg
- Chesdin Lake Road 3715, Dinwiddie County
- Deep Bottom Boat Ramp
- Osborne Park And Boat Landing
- Waterfowl Flyway 9111, Chesterfield County
- Lake Chesdin Parkway Chesterfield County
Track Jandls 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 Jandls Dam
Where does the data for Jandls 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 Jandls Dam.