Stillwater Orchard Pond Reservoir Report
Nearby: Orchard Scs-Sallisaw Creek Site-19
Last Updated: January 2, 2026
Stillwater Orchard Pond, located in Evansville, Arkansas, is a private earth dam structure built in 1948 with a primary purpose of "Other".
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Summary
The dam stands at a height of 37 feet with a hydraulic height of 35 feet, and has a storage capacity of 220 acre-feet. The pond covers a surface area of 9 acres and is regulated by the Oklahoma Water Resources Board, with state permitting, inspection, and enforcement in place.
Despite being classified with a low hazard potential, Stillwater Orchard Pond poses a very high risk, as indicated by a risk assessment rating of 1. The dam features a controlled spillway and a single valve outlet gate, with a last inspection conducted in November 2010. While the condition assessment is not rated, the structure is subject to a five-year inspection frequency, indicating ongoing monitoring and maintenance efforts to ensure its safety and stability.
For water resource and climate enthusiasts, Stillwater Orchard Pond offers a fascinating insight into the management and regulation of earth dam structures in Oklahoma. With its unique design features and risk assessment findings, this pond serves as a valuable case study for understanding the complexities of maintaining water resources in a sustainable and secure manner.
Year Completed |
1948 |
Dam Length |
2700 |
Dam Height |
37 |
River Or Stream |
TR-EVANSVILLE CREEK |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
35 |
Nid Storage |
220 |
Structural Height |
37 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
37 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Baron Fork At Dutch Mills
|
16cfs |
Caney Creek Near Barber
|
14cfs |
Baron Fork At Eldon
|
51cfs |
Little Lee Creek Near Short
|
6cfs |
Lee Creek At Short
|
9cfs |
Illinois River Near Tahlequah
|
362cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Stillwater Orchard Pond
The State Line To The Mouth Of The River
Outh Of The River