Marshall Lake dam
Marshall Lake
Located in Smithfield Township, Pennsylvania, Marshall Lake is a private water resource regulated by the Pennsylvania Department of Environmental Protection. Constructed in 1904, this Earth-type dam stands at 9 feet tall and spans 305 feet in length, holding a storage capacity of 62 acre-feet. With a primary purpose of recreation, Marshall Lake offers a serene escape for outdoor enthusiasts to enjoy activities such as fishing and boating on its 11-acre surface area.
Despite its picturesque setting, Marshall Lake poses a high hazard potential with an unsatisfactory condition assessment. The dam's last inspection in February 2020 revealed the need for improvements to meet safety standards. With a drainage area of 7.88 square miles and a normal storage capacity of 40 acre-feet, the lake serves as a vital resource for the surrounding community while also presenting a potential risk in cases of emergency.
As climate change continues to impact water resources, it is crucial for stakeholders to monitor and address the maintenance needs of structures like Marshall Lake to ensure the safety and sustainability of this recreational asset. With its historical significance and potential for environmental enhancement, Marshall Lake serves as a focal point for water resource and climate enthusiasts alike to engage in discussions and actions towards responsible stewardship of our natural landscapes.
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 Marshall Lake -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Brodhead Creek At Minisink Hills | 360 cfs | → |
| Brodhead Creek Near Analomink | 115 cfs | → |
| Bush Kill At Shoemakers | 201 cfs | → |
| Yards Creek Near Blairstown Nj | 4 cfs | → |
| Pocono Creek Ab Wigwam Run Near Stroudsburg | 138 cfs | → |
| Paulins Kill At Blairstown Nj | 84 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Marshall Lake.
Boat launches
- Kittatinny Access Area
- Poxono Access Area In Nj
- East Bangor Lake
- Mcdade Recreational Trail Delaware
- Lake Minisink
- West Shore Drive Stillwater Township
Track Marshall Lake 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 Marshall Lake
Where does the data for Marshall Lake 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 Marshall Lake.