Pilot Grove Creek Ws Scs Site 83a Dam Reservoir Report

Last Updated: December 5, 2025

Located in Collin, Texas, the Pilot Grove Creek WS SCS Site 83a Dam is a vital structure designed by the USDA NRCS to reduce flood risks along Elm Creek.


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Summary

Completed in 1921, this earth dam stands at a height of 27 feet and stretches 1826 feet in length, providing essential water storage of 637 acre-feet. The dam serves multiple purposes, including fire protection, stock and small fish pond maintenance, flood risk reduction, and recreation.

Despite its age, the dam has undergone structural modifications in 1967 to enhance its effectiveness. However, recent assessments have deemed its condition as unsatisfactory, warranting attention and maintenance. With a moderate risk level assigned to the site, regular inspections are conducted by the TCEQ to ensure its safety and integrity. The dam features an uncontrolled spillway, slide and sluice gates, and has a maximum discharge capacity of 2550 cubic feet per second.

Water resource and climate enthusiasts are drawn to the Pilot Grove Creek WS SCS Site 83a Dam for its historical significance, engineering design, and environmental impact. As a key flood risk reduction infrastructure in the area, the dam plays a crucial role in managing water flow, protecting local communities, and supporting various recreational activities. Despite its age and condition assessment, the dam continues to be a focal point for water resource management and conservation efforts in Collin, Texas.

Years Modified

1967 - Structural

Year Completed

1921

Dam Length

1826

Dam Height

27

River Or Stream

ELM CREEK

Primary Dam Type

Earth

Surface Area

20

Hydraulic Height

27

Drainage Area

1.4

Nid Storage

637

Structural Height

27

Outlet Gates

Slide (sluice gate) - 1, Uncontrolled - 2

Hazard Potential

Not Available

Foundations

Unlisted/Unknown

Nid Height

27
       
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.