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Merrill Dam, Wisconsin

Merrill Dam on the Wisconsin River in Wisconsin.

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45.1783, -89.686 · Lincoln County · NID WI00742. Tap the map to open this water in the live app.

What the runs do here

Wisconsin 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
Wisconsin Public Service Corporation Public Utility
Purpose
Hydroelectric, Recreation
Completed
1913
Type
Gravity
Height
23 ft
Length
705 ft
Spillway
Controlled
Storage
605 acre-ft · 373 acre pool
Drainage
2,721 sq mi
Condition
Satisfactory · Low 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

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.

Water right now

No USGS temperature gauge we read reports within 20 miles of this dam, so this page has no live number for it. That is a gap in the gauge network, not a judgement about the water.

Getting to it

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.

Fly shops nearby

The river this is on

Open this water on the map →Every reach around it coloured by today's water temperature, with the access points along it.