Seney B-1 Pool Dam Reservoir Report
Nearby: Seney A-1 Pool Dam Seney C-1 Pool Dam
Last Updated: December 5, 2025
Seney B-1 Pool Dam, located in Schoolcraft, Michigan, is a federal-owned structure designed by the U.S.
°F
°F
mph
Wind
%
Humidity
Summary
Department of Agriculture for the primary purpose of creating a Fish and Wildlife Pond along Gray's Creek. Completed in 1937, this Earth-type dam stands at a height of 9 feet with a hydraulic height of 8 feet, and a structural height of 10 feet. It spans a length of 12,806 feet and has a normal storage capacity of 178 acre-feet, serving a drainage area of 43.8 square miles.
Despite its low hazard potential, the dam is currently in poor condition as of the last inspection in July 2018. It has a very high risk assessment rating, indicating a need for immediate attention and potential risk management measures. The dam has undergone structural modifications in 1950 and is under state regulation by the Michigan Department of Environment, Great Lakes, and Energy (DEGLE). With a maximum discharge capacity of 852 cubic feet per second, the dam plays a crucial role in managing water resources and supporting wildlife in the area.
Enthusiasts of water resources and climate will find the Seney B-1 Pool Dam an intriguing structure that not only serves as a habitat for fish and wildlife but also poses a significant risk due to its poor condition and high-risk assessment. Located in a picturesque setting in Schoolcraft, Michigan, along Gray's Creek, this dam is a focal point for conservation efforts and regulatory oversight. As efforts continue to maintain and manage this vital water resource, the dam's significance in the region remains paramount for both environmental sustainability and public safety.
Years Modified |
1950 - Structural |
Year Completed |
1937 |
Dam Length |
12806 |
Dam Height |
9 |
River Or Stream |
GRAY'S CREEK |
Primary Dam Type |
Earth |
Surface Area |
120 |
Hydraulic Height |
8 |
Drainage Area |
43.8 |
Nid Storage |
1473 |
Structural Height |
10 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
10 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Manistique River Near Manistique
|
1270cfs |
Black River Near Garnet
|
15cfs |
Tahquamenon River Near Paradise
|
823cfs |
Sturgeon River Near Nahma Junction
|
105cfs |
Au Train River At Forest Lake
|
137cfs |
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 |
|---|---|---|
Mead Creek State Forest Campground
|
||
South Manistique Lake State Forest Campground
|
||
Fox River State Forest Campground
|
Seney B-1 Pool Dam
Ten Curves Road Germfask