Dd No N-1 (Boyles) Reservoir Report
Last Updated: December 7, 2025
Dd No N-1 (Boyles) is a significant earth dam located in Jackson, Kansas, along the NEBO CREEK-TR.
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Summary
Built in 1977 by the USDA NRCS, this dam serves a primary purpose of flood risk reduction, with a dam height of 23 feet and a hydraulic height of 24 feet. The dam has a storage capacity of 82.2 acre-feet and a surface area of 3.88 acres, providing vital protection to the surrounding area from potential flooding events.
Despite its low hazard potential and moderate risk assessment, Dd No N-1 (Boyles) has not been rated for its condition assessment. The dam features an uncontrolled spillway with a width of 83 feet, and no outlet gates. While it has not been inspected recently, the dam's emergency action plan status and adherence to guidelines remain unspecified. As a key infrastructure for flood risk management in the area, ongoing monitoring and maintenance may be necessary to ensure the dam's continued effectiveness in protecting the community from potential water-related disasters.
In conclusion, Dd No N-1 (Boyles) stands as a critical component of the water resource infrastructure in Jackson, Kansas, playing a vital role in flood risk reduction along NEBO CREEK-TR. With a rich history dating back to 1977 and a storage capacity of 82.2 acre-feet, this earth dam showcases the collaborative efforts of the USDA NRCS in safeguarding the local community from the impacts of flooding. As climate change continues to pose challenges to water resource management, the maintenance and assessment of dams like Dd No N-1 (Boyles) will be crucial in ensuring the resilience and safety of the surrounding area against future water-related hazards.
Year Completed |
1977 |
Dam Length |
900 |
Dam Height |
23 |
River Or Stream |
NEBO CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
3.88 |
Hydraulic Height |
24 |
Nid Storage |
82.2 |
Structural Height |
27 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Delaware R Nr Muscotah
|
52cfs |
Soldier C Nr Delia
|
3cfs |
Stranger C Nr Potter
|
199cfs |
Soldier C Nr Topeka
|
4cfs |
Delaware R Bl Perry Dam
|
107cfs |
Kansas R At Topeka
|
1770cfs |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Main Camp Site
|
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Geremy's Point
|
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God's Country
|
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Banner Creek
|
Dd No N-1 (Boyles)