Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant dam
Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant
Sewage Holding Pond No.2 at the Lower Potomac Pollution Control Plant in Fairfax, Virginia, is a crucial off-stream impoundment structure designed to manage wastewater and prevent pollution in the surrounding area. Owned by the local government and regulated by the Department of Conservation and Recreation, this sewage holding pond plays a vital role in maintaining water quality and protecting the environment. With a low hazard potential and a height of 16 feet, this earth dam structure has a storage capacity of 70.5 acre-feet and serves a primary purpose of managing sewage and wastewater.
Situated along Pohick Creek, Sewage Holding Pond No.2 is a key component of the region's water resource management infrastructure. While the structure's condition is currently not rated, regular inspections and enforcement measures ensure its continued safe operation. With a length of 1050 feet, this holding pond efficiently manages wastewater and helps to prevent contamination of local waterways. Additionally, its location within the Baltimore District and under the jurisdiction of the state regulatory agency highlights the importance of this facility in maintaining water quality standards in the region.
As a critical component of the Lower Potomac Pollution Control Plant, Sewage Holding Pond No.2 reflects the commitment of local government to sustainable water resource management. With a focus on environmental protection and regulatory compliance, this structure plays a vital role in safeguarding public health and the ecosystem. By effectively managing sewage and wastewater, this facility contributes to the overall resilience of the region's water infrastructure and ensures the continued health and well-being of the community.
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 Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Long Branch Near Annandale | 1 cfs | → |
| Accotink Creek Near Annandale | 3 cfs | → |
| Cameron Run At Alexandria | 6 cfs | → |
| Mattawoman Creek Near Pomonkey | 1 cfs | → |
| Fourmile Run At Alexandria | 3 cfs | → |
| Piscataway Creek At Piscataway | 3 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant.
Boat launches
- Forest Hill Road Lake Ridge
- Marshall Hall Boat Ramp Charles County
- Ludgate Drive Mount Vernon
- Wharf Road Accokeek
- Wayne F Anderson Bikeway Alexandria
- Gravelly Point Boat Ramp
Campgrounds
- Pohick Bay Regional Park
- Fort Belvoir Travel And Rv Camp
- Burke Lake Park
- Smallwood State Park
- Prince William Forest Rv Campground
- Smallwood State Park Youth Group Campsite
Fishing spots
Track Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant 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 Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant
Where does the data for Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant 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 Sewage Holding Pond No.2 Lower Potomac Pollution Control Plant.