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Harpers Slough

Fishing spots, fishing reports, and regulations in

Iowa, United States

5.0·15 catches

Top fish species at Harpers Slough

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Harpers Slough fishing reports

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Bluegill

length · weight

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Channel catfish

length · weight

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length · weight

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Flathead catfish

length · weight

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Freshwater drum

length · weight

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Largemouth bass

length · weight

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General info

Harpers Slough is a stream located in Allamakee County, Iowa, United States. It is most popular for fishing Largemouth bass, White bass, and Channel catfish.

Location

43°12′5.4″N 91°08′34.4″W
Directions

Amenities

When are Largemouth Bass biting on Harpers Slough?

Learn what time of year and day to go fishing at Harpers Slough. Download Fishbrain today to look for new fishing spots, scout new fishing access, or prep for your next trip.

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Fishing regulations at Harpers Slough, IA

Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.

Fishing regulations in Iowa can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.

Below you will see fishing regulations for catching Largemouth bass as of April 13th, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.

Largemouth bass

Seasons

Open

Bag limit

5

Min size

14"

Measurement

Total Length

Special gear

Aggregate

5
Daily Bag & Possession Limit: Boundary Rivers - combined daily 5 and possession of 10 Length Limits - 14-inch minimum on the Mississippi River and 12-inch minimum length limit on the Missouri River. Associated chutes and backwaters of the border rivers are included where intermittent or constant flow occur. No length limit on the Big Sioux River. Browns Lake Mississippi River (Jackson) is catch and release only.

Micropterus nigricans

Regulations for

43°12′5.4″N 91°08′34.4″W
Regulations in the map
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Local laws and licenses

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Reviews of Harpers Slough

5.0
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2 ratings

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1
Top reviews

Cities nearby

La Crosse

43.2 miles away

Platteville

47.3 miles away

Onalaska

47.5 miles away

Dubuque

53.2 miles away

Winona

64.3 miles away

Baraboo

73.0 miles away

Verona

82.3 miles away

Middleton

82.8 miles away

Waunakee

85.5 miles away

Rochester

87.3 miles away

Madison

88.6 miles away

Austin

97.6 miles away

Wisconsin Rapids

105.3 miles away

Marshfield

111.9 miles away

Eau Claire

113.2 miles away

Plover

118.2 miles away

Red Wing

119.9 miles away

Chippewa Falls

120.4 miles away

Stevens Point

121.0 miles away

Owatonna

121.1 miles away

Menomonie

122.6 miles away

Northfield

133.0 miles away

Hastings

135.7 miles away

River Falls

136.2 miles away

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FAQ about Harpers Slough fishing

the Harpers Slough is a stream located in Allamakee County, Iowa, United States. Its coordinates are:
43°12′5.4″N 91°08′34.4″W
.
Find the best fishing spots on the Harpers Slough by looking at where other anglers have caught fish. This can easily be done in the where it is also possible to see big fish potential and how good fishing is right now along with Garmin® depth maps.
The most common species in the Harpers Slough are:
The latest Harpers Slough fishing reports are:
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