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Home › Waters › Iowa › Yellow River
River · Northeast Iowa, the Driftless Area of Allamakee and Winneshiek counties above the Mississippi · Iowa

Yellow River Fishing Guides

A Driftless Area river in northeast Iowa carrying cold spring tributaries down to the Mississippi through Yellow River State Forest.

Sunrise over a winding river cutting through open farm country
Gauge location. Map data © OpenStreetMap contributors.

Guides on the Yellow River

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About the Yellow River

The Yellow River drains a two hundred and twenty square mile basin in the Driftless Area of northeast Iowa and empties into the Mississippi below Marquette. The gauge near Ion sits low in that basin, well downstream of the cold headwater branches, and it reads a river rather than a spring creek. The distinction matters here because the Yellow’s reputation comes from its tributaries, which are limestone spring streams, while the main stem below their confluences is a larger and warmer water with a different character.

Trout fishing in the drainage concentrates in those tributaries and in the upper main stem, where spring inflow holds temperatures down through the summer. Iowa manages several of these branches as trout water and stocks them, and wild brown trout have established in a number of them. Farther down, around and below the gauge, smallmouth bass and channel catfish take over as the practical target, and the river fishes like the Mississippi tributary it is.

Yellow River State Forest covers a substantial block of the lower valley and provides the best public access in the drainage, with campgrounds, trails and a road system reaching the river at several points. The forest is steep, wooded bluff country and the roads through it are worth respecting in wet weather. Paint Creek, one of the state forest streams, is a well-known trout tributary in its own right.

Flows respond quickly to rain because the Driftless topography sheds water fast off the ridges into narrow valleys. A summer storm can put the main stem out of shape for a day or two while the spring-fed branches stay clear, which is the single most useful thing to know about fishing this drainage. The gauge at Ion is the fastest check on which of the two situations an angler is walking into.

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Read the full license

Version 1.0, dated 6 September 2026. Applies to every photograph submitted to GuidedFloats through the contact form, a species page, or the community board.

1. What you give us

By ticking the box on the form you grant Guided Floats, LLC (“GuidedFloats”, “we”) a non-exclusive, worldwide, royalty-free license to store, copy, resize, crop and display your photograph on guidedfloats.com, in GuidedFloats’ own social media accounts and mobile apps, and in material that promotes the site itself, in connection with the fish, water or community feature you sent it in for. The license lasts until you withdraw it (section 4).

You keep the copyright. The license is not exclusive, so you can use the photo anywhere else and license it to anyone else. We will not sell your photo, license it on to anyone else on its own, or use it in paid advertising for a third party.

2. What you confirm

You confirm that you took the photograph yourself (or otherwise own the rights to it), that you have the right to grant this license, and that publishing the photo does not infringe anyone else’s copyright, privacy or other rights.

If any person is recognisable in the photo, you confirm that they have agreed to its being published here, and that a parent or guardian has agreed on behalf of anyone under 18. Please do not send photographs of other people’s catches, screenshots, or pictures copied from other websites or social media.

3. Credit

We print the credit name you give us beside the photo wherever it appears on the site, and record it as the photo’s creator in the page’s structured data. If you leave the credit blank we use the name you gave us on the form. Write “Anonymous” if you prefer no name at all. Your email address, phone number and the exact spot the photo was taken are never published.

4. Withdrawing the license

You can withdraw the license at any time by emailing hello@guidedfloats.com, or by using the contact form, and telling us which photo you mean. We will remove the photo from guidedfloats.com within 7 days of receiving your message and stop using it in anything new. Copies that are already outside our control — search-engine caches, social posts that have already gone out, printed material already produced — may take longer to disappear or may not be recallable, and we are not responsible for those.

5. What we may do

We choose which photos to publish and may decline any submission without giving a reason. We may crop, resize, sharpen or colour-correct a photo for display, and we may remove a photo at any time. We will not alter a photo in a way that misrepresents the fish, the water or you.

6. Your details

We keep your name, email address, the credit name, the water and date you gave us, and the network address the submission came from, with the submission record, as our evidence of this license. We hold that record for as long as the photo is published and for the retention period described in our privacy policy. Location data that your camera or phone embedded in the file is removed before the photo is published.

7. Versions

The version of this license you accepted is stored with your submission and printed with the photo. A later version does not apply to a photo you have already sent unless you agree to it.

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Reviewed by hand before it appears. Pick the water, not the spot — we never publish exact locations.

Never published. We use it only if we need to ask about the photo.

Posting to Yellow River.

JPG, PNG or WebP, up to 12 MB. We resize it and strip the location data out of the file.

The name shown under the photo. Leave blank to stay anonymous.

Reader photo license v1.0 — the short version:

  • You grant Guided Floats, LLC a non-exclusive, royalty-free license to publish, resize and crop your photo on guidedfloats.com and in GuidedFloats’ own social posts and apps. You keep the copyright and can use the photo anywhere else.
  • You confirm that you took the photo yourself, that publishing it does not infringe anyone else’s rights, and that anyone recognisable in it (or a parent or guardian, if they are under 18) is happy for it to appear here.
  • Credit is printed beside the photo wherever it appears on the site, using the credit name you give us. Leave it blank and we use your name; write “Anonymous” for no name. Your email address is never published.
  • Withdrawing is one email to hello@guidedfloats.com naming the photo. It comes off the site within 7 days.
Read the full license

Version 1.0, dated 6 September 2026. Applies to every photograph submitted to GuidedFloats through the contact form, a species page, or the community board.

1. What you give us

By ticking the box on the form you grant Guided Floats, LLC (“GuidedFloats”, “we”) a non-exclusive, worldwide, royalty-free license to store, copy, resize, crop and display your photograph on guidedfloats.com, in GuidedFloats’ own social media accounts and mobile apps, and in material that promotes the site itself, in connection with the fish, water or community feature you sent it in for. The license lasts until you withdraw it (section 4).

You keep the copyright. The license is not exclusive, so you can use the photo anywhere else and license it to anyone else. We will not sell your photo, license it on to anyone else on its own, or use it in paid advertising for a third party.

2. What you confirm

You confirm that you took the photograph yourself (or otherwise own the rights to it), that you have the right to grant this license, and that publishing the photo does not infringe anyone else’s copyright, privacy or other rights.

If any person is recognisable in the photo, you confirm that they have agreed to its being published here, and that a parent or guardian has agreed on behalf of anyone under 18. Please do not send photographs of other people’s catches, screenshots, or pictures copied from other websites or social media.

3. Credit

We print the credit name you give us beside the photo wherever it appears on the site, and record it as the photo’s creator in the page’s structured data. If you leave the credit blank we use the name you gave us on the form. Write “Anonymous” if you prefer no name at all. Your email address, phone number and the exact spot the photo was taken are never published.

4. Withdrawing the license

You can withdraw the license at any time by emailing hello@guidedfloats.com, or by using the contact form, and telling us which photo you mean. We will remove the photo from guidedfloats.com within 7 days of receiving your message and stop using it in anything new. Copies that are already outside our control — search-engine caches, social posts that have already gone out, printed material already produced — may take longer to disappear or may not be recallable, and we are not responsible for those.

5. What we may do

We choose which photos to publish and may decline any submission without giving a reason. We may crop, resize, sharpen or colour-correct a photo for display, and we may remove a photo at any time. We will not alter a photo in a way that misrepresents the fish, the water or you.

6. Your details

We keep your name, email address, the credit name, the water and date you gave us, and the network address the submission came from, with the submission record, as our evidence of this license. We hold that record for as long as the photo is published and for the retention period described in our privacy policy. Location data that your camera or phone embedded in the file is removed before the photo is published.

7. Versions

The version of this license you accepted is stored with your submission and printed with the photo. A later version does not apply to a photo you have already sent unless you agree to it.

Access

Ion - the gauge reach on the lower river above the Mississippi confluence.
Yellow River State Forest - the main public land, with campgrounds and river access.
Paint Creek - a cold spring tributary in the state forest with trout water.
Volney - bridge and roadside access on the middle river.
Castalia - upper valley access near the headwater branches.
Harpers Ferry - the nearest Mississippi River town below the mouth.
Big Spring - a headwater spring source feeding the cold upper tributaries.

Seasons

Spring: high and off-color after snowmelt and rain, with the spring branches clearing first.
Summer: warm in the main stem, with trout fishing concentrated in the cold tributaries.
Fall: the main stem settles and smallmouth feed well through September and October.
Winter: Iowa's winter trout season keeps some tributary water open through the cold months.

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Questions

What is the current flow on the Yellow River?

As of Sep 17, 5:45 am, the USGS gauge Yellow River near Ion, IA reads 121 cfs. Conditions update every 15 minutes.

What species can you catch on the Yellow River?

Anglers target Brook Trout, Brown Trout, Channel Catfish, Rainbow Trout, Smallmouth Bass on the Yellow River in Iowa.

Where can you access the Yellow River?

Ion - the gauge reach on the lower river above the Mississippi confluence. Yellow River State Forest - the main public land, with campgrounds and river access. Paint Creek - a cold spring tributary in the state forest with trout water. Volney - bridge and roadside access on the middle river. Castalia - upper valley access near the headwater branches. Harpers Ferry - the nearest Mississippi River town below the mouth. Big Spring - a headwater spring source feeding the cold upper tributaries.

When is the best time to fish the Yellow River?

Spring: high and off-color after snowmelt and rain, with the spring branches clearing first. Summer: warm in the main stem, with trout fishing concentrated in the cold tributaries. Fall: the main stem settles and smallmouth feed well through September and October. Winter: Iowa's winter trout season keeps some tributary water open through the cold months.

Where are the fishing regulations for the Yellow River?

Regulations change by season and section. Read the current rules on the Iowa agency site: https://www.iowadnr.gov/fishing/fishing-regulations