Dam Report

Susquehanna Woods Lower dam

Pennsylvania, USA Tr Sandy Run Hazard High
Today high
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Tonight low
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Dam height
14ft
Hazard rating
High
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Susquehanna Woods Lower -- None dam
Susquehanna Woods Lower None · Tr Sandy Run
About this dam

Susquehanna Woods Lower

Susquehanna Woods Lower is a locally-owned dam in Abington Township, Montgomery, Pennsylvania, designed for flood risk reduction along the TR Sandy Run. Completed in 2005, this earth dam stands at a height of 14 feet and has a length of 500 feet, providing a storage capacity of 20 acre-feet. With a primary purpose of flood risk reduction, it also serves recreational purposes within the community.

Managed by the Pennsylvania Department of Environmental Protection, Susquehanna Woods Lower is regulated, inspected, and enforced by the state to ensure its safety and effectiveness. Despite being assessed as in fair condition with a high hazard potential, the dam is regularly monitored and maintained, with the last inspection conducted in October 2019. While there are no associated structures or emergency action plans in place, the dam's primary function remains crucial in protecting the surrounding area from potential flooding events.

For water resource and climate enthusiasts, Susquehanna Woods Lower represents a vital infrastructure for flood control and community safety in Montgomery, Pennsylvania. As a locally-owned structure with state oversight, its role in managing the TR Sandy Run watershed highlights the importance of proactive dam management and regulatory enforcement to mitigate flood risks and protect downstream areas. With ongoing assessments and inspections, the dam continues to play a significant role in safeguarding the local environment and enhancing recreational opportunities for residents.

StateNone
River / streamTr Sandy Run
NID IDPA01697
Owner typeLocal Government
Primary purposeFlood Risk Reduction
Dam typeEarth
Year built2005
Dam height14 ft
Dam length500 ft
Max storage20 AF
Normal storage1 AF
Surface area1.0 ac
Drainage area0.2 sq mi
Hazard potentialHigh
ConditionFair
Last inspectionThu, 10 Oct 2019 00:00:00 GMT

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.
Detailed forecast

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.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

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.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Regional inflow

Nearby streamflow gauges

USGS streamgauges around Susquehanna Woods Lower -- inflows here typically show up in storage 24-72 hours later.

Track Susquehanna Woods Lower 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.

FAQ

About Susquehanna Woods Lower

Where does the data for Susquehanna Woods Lower 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.

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