Stream Details

Dunning Spring

General Information

County: Winneshiek
Location: Located in Dunnings Spring Park on the north side of Decorah off Ice Cave Road.
Stream Segment Length: 0.20


Amenities at Dunning Spring include:
  • Picnic Area
  • Trails
  • Good/Excellent Shorefishing

District-Wide Trout Stream Fishing Report

Brook Trout - Good: Brook trout are fall spawners so watch for shallow cleared gravel depressions or nests called redds and walk around these areas. Spawning usually takes place in October and November with fry emerging from the streambed in March and April
Brown Trout - Good: Brown trout are building nests or redds. Anglers can find fish guarding these areas. Please walk around these small cleared depressions in the stream bottom.
Blue wing olive hatches are more prevalent in late afternoon to early evening now. Also look for sporadic midge hatches. For these hatches, try using #18 or 20 emergers or nymphs with a #22 or #24 drop hook gnarly midge. Anglers using nightcrawlers, crankbaits and spinnerbaits will catch fish.
Rainbow Trout - Good: Rainbow trout spawn in the spring, usually from March to May in riffles and gravel runs.

Fishing Summary

This very small stream receives an annual stocking of domestic brook trout. This stream is in a beautiful Decorah city park with a continuous flowing waterfall. Sampling data indicates 180 brook trout per mile with fish up to 11 inches collected. This is not an estimated population and actual trout numbers will be higher. (2012)

Stream Maps

Download Printable Stream Map

Parking Access
Catchable Trout Waters
Special Trout Fisheries

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Popular Fish Species in this Stream

Fish Stocking

  • 05/23/2013 - 500 Brook Trout (4.0")
  • 05/09/2012 - 500 Brook Trout (2.5")
  • 05/20/2011 - 501 Brook Trout (3.5")
  • 07/16/2010 - 500 Brook Trout (4.0")
  • 08/03/2007 - 500 Brook Trout (6.0")
  • 05/15/2006 - 500 Brook Trout (4.4")
  • 05/11/2005 - 500 Brook Trout (4")


The Fishing Regulations brochure is available for download. The summaries listed below are a partial listing provided for your benefit.

  • Brook Trout
    • Season: Continuous
    • Daily Bag Limit: combined trout (brook, brown, and rainbow) - 5 fish
    • Possession Limit: combined trout (brook, brown, and rainbow) - 10 fish
    • Length Limit: none
    • Other: Anglers must have paid the Trout Fee to fish for or possess trout

Iowa-Caught Fish Are Safe to Eat, In Almost All Cases

The vast majority of Iowa’s streams, rivers and lakes offer safe and high-quality fish that pose little or no threat to human health if consumed. Some limitations may apply for young children and pregnant women. Here’s a Fish Consumption Fact Sheet from the Iowa DNR and the Iowa Dept. of Public Health for more information. Here is a list of current fish consumption advisories for Iowa lakes and rivers.