Hosey (Maumee River) Dam (In-Channel) Reservoir Report

Last Updated: December 5, 2025

The Hosey (Maumee River) Dam in Indiana serves as a crucial structure for the management of fish and wildlife ponds, with a primary purpose of supporting aquatic ecosystems.


°F

°F

mph

Wind

%

Humidity

Summary

Completed in 1925, this concrete dam stands at a height of 10 feet and stretches 475 feet in length, providing storage of 874 acre-feet of water. Situated on the Maumee River in Allen County, Indiana, the dam plays a vital role in regulating water flow and supporting the habitat of various species.

Despite its age, the Hosey Dam is considered to have a low hazard potential and is rated in fair condition as of the last assessment in 2001. With a maximum discharge capacity of 2150 cubic feet per second, the dam operates with Tainter radial gates for water control. The risk assessment for the dam indicates a high risk level (2), prompting the need for continued monitoring and potential risk management measures to ensure the safety and functionality of the structure.

As a publicly owned utility structure, the Hosey (Maumee River) Dam is subject to state regulation, permitting, inspection, and enforcement by the Indiana Department of Natural Resources. With its location in the Maumee River watershed and its role in supporting fish and wildlife habitats, this dam stands as a vital component of water resource management in the region, highlighting the intersection of infrastructure, ecology, and climate resilience.

Year Completed

1925

Dam Length

475

Dam Height

10

River Or Stream

MAUMEE RIVER

Primary Dam Type

Concrete

Surface Area

12.5

Hydraulic Height

10

Drainage Area

1943.09

Nid Storage

874

Structural Height

10

Outlet Gates

Tainter (radial)

Hazard Potential

Low

Nid Height

10
       
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.