Perrins Marsh dam
Perrins Marsh
Perrins Marsh, also known as Brown Pond, is located in Northmoreland Township, Pennsylvania, and is a privately owned recreational area situated along Whitelock Creek. The earth dam, completed in 1919, stands at a height of 6 feet and has a length of 60 feet, creating a storage capacity of 470 acre-feet. With a surface area of 84 acres and a drainage area of 1.8 square miles, Perrins Marsh provides a serene and picturesque setting for outdoor activities.
Despite its historical significance and recreational value, Perrins Marsh poses a high hazard potential due to its condition assessment rated as fair. The dam is regulated by the Pennsylvania Department of Environmental Protection, with state permitting, inspection, and enforcement in place to ensure its safety and maintenance. While the dam has not been modified over the years, regular inspections are conducted to mitigate risks and uphold the dam's integrity for public safety.
Enthusiasts of water resources and climate will find Perrins Marsh to be a captivating site, offering a glimpse into the intersection of human intervention and natural landscapes. As a privately owned recreational area with a rich history dating back to the early 20th century, Perrins Marsh serves as a reminder of the importance of sustainable dam management practices in safeguarding both the environment and local communities.
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 Perrins Marsh -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Lackawanna River At Old Forge | 349 cfs | → |
| Tunkhannock Creek Near Tunkhannock | 281 cfs | → |
| Susquehanna River At Wilkes-Barre | 8,970 cfs | → |
| Lackawanna R Bl Leggetts Creek At Scranton | 223 cfs | → |
| Susquehanna River At Meshoppen | 6,980 cfs | → |
| Lackawanna River At Archbald | 167 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Perrins Marsh.
Boat launches
- Whites Ferry
- Apple Tree Road
- Carverston Road-Francis Slocum State Park
- Harveys Lake
- Lake Winola
- River Road Tunkhannock
Campgrounds
- Frances Slocum State Park
- Moon Lake County Park
- Carpenter Town
- Lackawanna State Park
- Modern Cabins
- Ricketts Glen State Park
More reservoirs
Track Perrins Marsh 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 Perrins Marsh
Where does the data for Perrins Marsh 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 Perrins Marsh.