Long Pine Run dam
Long Pine Run
Long Pine Run is a vital water supply dam located in Franklin Township, Adams County, Pennsylvania. Completed in 1970, this earth dam stands at a height of 112 feet and spans 840 feet in length, with a storage capacity of 7490 acre-feet. The dam serves as a critical resource for the surrounding community, with a normal storage capacity of 5430 acre-feet, covering a surface area of 150 acres and draining an area of 7.92 square miles.
Maintained and regulated by the Pennsylvania Department of Environmental Protection, Long Pine Run is classified as a high hazard potential dam with a fair condition assessment. The dam is regularly inspected, with the most recent inspection conducted in March 2021 to ensure its structural integrity and safety. While the dam has not undergone any modifications in recent years, it remains a key component of the water supply infrastructure in the region, providing essential resources for both domestic and agricultural purposes.
Water resource and climate enthusiasts will appreciate the significance of Long Pine Run in sustaining the local ecosystem and community. As a primary water supply source, this dam plays a crucial role in ensuring water availability and security for residents in Adams County. With its impressive storage capacity and strategic location along Birch Run, Long Pine Run stands as a testament to the importance of infrastructure management and regulatory oversight in safeguarding 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 Long Pine Run -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Mountain Creek Near Pine Grove Furnace | 9 cfs | → |
| Bermudian Creek At Oxford Road Nr Heidlersburg | 4 cfs | → |
| Antietam Creek Near Waynesboro | 43 cfs | → |
| Monocacy River At Bridgeport | 29 cfs | → |
| West Conewago Creek At East Berlin | 55 cfs | → |
| Big Pipe Creek At Bruceville | 27 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Long Pine Run.
Boat launches
- Long Pine
- Laurel Lake Boat Launch
- Letterkenny Reservoir
- Catoctin Hollow Road 13916, Frederick County
- Fannettsburg Dam Ramp
- Opossum Lake Bl #1
Campgrounds
- Primitive Campsite #11
- Primitive Campsite #10
- Caledonia State Park
- Primitive Campsite #8
- Primitive Campsite #7
- Primitive Campsite #5
Track Long Pine Run 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 Long Pine Run
Where does the data for Long Pine Run 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 High 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 Long Pine Run.