Camp Delmont Reservoir Report

Last Updated: December 6, 2025

Camp Delmont, also known as Long Lake, is a private recreational facility located in Marlborough Township, Montgomery County, Pennsylvania.


°F

°F

mph

Wind

%

Humidity

Summary

The dam at Camp Delmont is a concrete structure completed in 1947 and stands at a height of 19 feet, providing a storage capacity of 236 acre-feet. The primary purpose of the dam is for recreation, with a normal storage capacity of 40 acre-feet and a surface area of 12 acres.

The dam at Camp Delmont regulates the flow of Unami Creek and is under the jurisdiction of the Pennsylvania Department of Environmental Protection. Despite being categorized as having a low hazard potential, the dam's condition is assessed as fair, with the last inspection conducted in July 2018. The facility is subject to state regulations, permitting, inspection, and enforcement to ensure its safety and compliance with environmental standards.

Camp Delmont offers a serene setting for water resource and climate enthusiasts to enjoy various recreational activities. With its picturesque location and historical significance, the dam serves as a vital structure for water management and preservation in the region. Visitors can appreciate the balance between human enjoyment and environmental stewardship at this unique private facility in Pennsylvania.

Year Completed

1947

Dam Length

190

Dam Height

19

River Or Stream

UNAMI CREEK

Primary Dam Type

Concrete

Surface Area

12

Drainage Area

34.9

Nid Storage

236

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

19
       
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.