Lake Warren Reservoir Report

Last Updated: December 13, 2025

Lake Warren, located in Bucks, Pennsylvania, is a state-regulated reservoir with a primary purpose of recreation.


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Summary

This Earth dam, completed in 1935, stands at a height of 10 feet and has a length of 110 feet, creating a storage capacity of 106 acre-feet. The reservoir covers a surface area of 15 acres and is fed by the West Branch Tinicum Creek, with a drainage area of 0.6 square miles.

Despite its low hazard potential and fair condition assessment, Lake Warren underwent modifications in 2009 to improve its hydraulic capabilities. The reservoir is under the jurisdiction of the Pennsylvania Department of Environmental Protection, ensuring state permitting, inspection, and enforcement procedures are in place. The dam is regularly inspected every 5 years, with the last assessment conducted in June 2015.

With its picturesque location in Nockamixon Township and its role in providing recreational opportunities for visitors, Lake Warren serves as both a vital water resource and a scenic destination for outdoor enthusiasts. Its historical significance, coupled with its regulated status and ongoing maintenance efforts, make it a noteworthy site for water resource and climate enthusiasts to explore and appreciate.

Years Modified

2009 - Hydraulic

Year Completed

1935

Dam Length

110

Dam Height

10

River Or Stream

WEST BRANCH TINICUM CREEK

Primary Dam Type

Earth

Surface Area

15

Drainage Area

0.6

Nid Storage

106

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

10
       
Seasonal Comparison

Weather Forecast

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. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
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. Investigations and studies are necessary.
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.
Not Available
Dams for which the condition assessment is restricted to approved government users.

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, environment 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.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.