41.8391, -86.3512 · Berrien County ·
NID MI00157. Tap the map to open this water in the
live app.
What the runs do here
St Joseph River carries no anadromous run on our corridor map, so
this page makes no claim about salmon or steelhead at this dam. What it sits on is coldwater —
resident trout water — and the section below says which classification says so.
The structure
Owner
Indiana & Michigan Power Company Public Utility
Purpose
Hydroelectric
Completed
1895
Type
Gravity
Height
23 ft
Length
1170 ft
Spillway
Controlled
Storage
3,895 acre-ft · 423 acre pool
Drainage
4,037 sq mi
Condition
Satisfactory · High hazard potential
Status
Normal Operations
From the National Inventory of Dams (USACE). Hazard potential is a
downstream-consequence classification, not a statement about the structure's condition.
The water above and below
McCoy Creek
0.34 mi from the dam · Cold transitional stream (MDNR VSEC) · typed Cold-transitional
Coldwater designation is the state's own classification. A dam sits on one river and this list
is every designated reach within a mile and a half of it, so a tributary mouth shows up here too.
Live from USGS. A gauge miles away
is a gauge miles away — the distance column is there so you can discount it. A hydro dam's
releases move the flow below it on a schedule the gauge sees and this page does not.
Public access sites near the dam, straight-line distance. A dam itself is private property
unless its owner says otherwise; these are the places the state lists as open.