Manchester Farm Regional Swm Pond Dam dam
Manchester Farm Regional Swm Pond Dam
Manchester Farm Regional Stormwater Pond Dam, located in Germantown, Maryland, is a vital structure designed by Loiederman to mitigate flood risks along the Great Seneca Creek-TR. Constructed in 1996, this earth dam stands at a height of 21.2 feet and spans 415 feet in length, with a storage capacity of 93.53 acre-feet. The primary purpose of the dam is flood risk reduction, serving as a crucial defense against potential inundation in the area.
With a significant hazard potential and fair condition assessment, Manchester Farm Dam is subject to regular inspections by the Maryland Dam Safety regulatory agency. The dam's spillway, an uncontrolled type with a width of 50 feet, ensures effective water discharge during peak flow events. Despite its moderate risk assessment rating, the dam's emergency action plan status and risk management measures remain unspecified, warranting further attention to enhance public safety and preparedness in case of emergencies.
As a key infrastructure asset in Montgomery County, Manchester Farm Regional Stormwater Pond Dam plays a crucial role in protecting the surrounding community from flood hazards. With its strategic location and design features, including a stone core and rock-soil foundations, the dam stands as a testament to effective water resource management and climate resilience efforts in the region.
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 Manchester Farm Regional Swm Pond Dam -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Seneca Creek At Dawsonville | 38 cfs | → |
| Bennett Creek At Park Mills | 15 cfs | → |
| Broad Run Near Leesburg | 18 cfs | → |
| Limestone Branch Near Leesburg | 2 cfs | → |
| Patuxent River Near Unity | 12 cfs | → |
| Difficult Run Near Great Falls | 11 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Manchester Farm Regional Swm Pond Dam.
Boat launches
- Clarksburg Road Germantown
- Rileys Lock Road Darnestown
- Chesapeake And Ohio Canal Frederick County
- Edwards Ferry Road Montgomery County
- Potomac Hills Street Fairfax County
- Smart's Mill Rd (Private) Leesburg
Campgrounds
- Little Bennett Regional Park
- Little Bennett Campground
- Turner Farm
- Horsepen Branch Campsite
- Horsepen Branch
- Indiant Flats Campsite
Fishing spots
- Culler Lake
- Fenwick Branch
- Silver Spring Branch (Historical)
- Dalecarlia Reservoir
- Washington Aqueduct
- Pinehurst Branch
Track Manchester Farm Regional Swm 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 Manchester Farm Regional Swm Pond Dam
Where does the data for Manchester Farm Regional Swm 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 Significant 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 Manchester Farm Regional Swm Pond Dam.