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HomeWatersMaryland › Antietam Creek
Spring creek · Washington County, Maryland, the Hagerstown Valley limestone country above the Potomac · Maryland

Antietam Creek Fishing Guides

A limestone creek running the length of the Hagerstown Valley to the Potomac, holding wild brown trout in its cold upper reaches and a strong smallmouth population below.

A wide river below a ridge in full autumn colour in the Appalachians
Gauge location. Map data © OpenStreetMap contributors.

Guides on the Antietam Creek

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About the Antietam Creek

Antietam Creek is known to most Americans for one day in September 1862, and the battlefield still shapes how the lower creek looks and who owns the land along it. For anglers it is something else entirely: a genuine limestone stream, fed by springs rising out of the valley floor, running clear and fertile through farm country for roughly forty miles before it reaches the Potomac below Sharpsburg.

Limestone geology is what sets it apart from the freestone streams in the ridges to the west. The groundwater feeding it is alkaline and mineral rich, which supports far more aquatic insect and crustacean life than an acidic mountain stream can, and it moderates temperature at both ends of the year. The upper creek and its spring tributaries stay cold enough for wild brown trout. The lower creek warms in summer but stays productive, and that fertility is why the smallmouth grow well here.

The creek fishes as two distinct waters. Above the valley the flow is smaller, cooler and more technical, with wild browns holding in undercut banks and weed edges and refusing anything clumsy. Below the confluences it widens into a classic mid-Atlantic smallmouth stream with riffles, ledges and long pools, and it is fished with crayfish imitations and small streamers from a kayak or on foot.

Access is better than on most private-land limestone creeks, largely because of the federal and state holdings along the lower reaches. The Antietam National Battlefield protects a long section, a state park runs along the creek near the mouth, and the towpath corridor at the Potomac provides a public endpoint. Higher up, much of the land is farmed and permission matters.

Flow is the variable to watch. Being spring fed gives the creek a firmer baseflow than a rain-driven stream, but the valley is agricultural and the creek still blows out and stains after heavy rain, clearing over two or three days. Spring and fall are the strongest windows, and summer mornings fish well in the shaded upper water long after the lower creek has warmed.

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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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Posting to Antietam Creek.

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

Antietam National Battlefield - the federal land protecting a long public stretch of the lower creek.
Antietam Creek Aqueduct - the canal aqueduct at the mouth where the creek meets the Potomac.
Sharpsburg - the small town at the lower creek and the reference point for the gauge.
Hagerstown - the largest nearby city and the service center for the valley.
Devils Backbone County Park - the county park with public creek frontage upstream.
Chesapeake and Ohio Canal towpath - the public corridor along the Potomac at the confluence.
Potomac River - the larger river receiving the creek below Sharpsburg.

Seasons

Spring: strong steady flows, active smallmouth and the best wild trout fishing in the upper creek.
Summer: the lower creek warms and fishes early and late, while the spring-fed upper water stays cool.
Fall: cooling water and the most consistent smallmouth fishing of the year.
Winter: cold and clear, with trout in the upper reaches and smallmouth holding deep and slow.

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Questions

What is the current flow on the Antietam Creek?

As of Sep 17, 5:30 am, the USGS gauge ANTIETAM CREEK NEAR SHARPSBURG, MD reads 94 cfs. Conditions update every 15 minutes.

What species can you catch on the Antietam Creek?

Anglers target Brown Trout, Channel Catfish, Fallfish, Redbreast Sunfish, Rock Bass, Smallmouth Bass on the Antietam Creek in Maryland.

Where can you access the Antietam Creek?

Antietam National Battlefield - the federal land protecting a long public stretch of the lower creek. Antietam Creek Aqueduct - the canal aqueduct at the mouth where the creek meets the Potomac. Sharpsburg - the small town at the lower creek and the reference point for the gauge. Hagerstown - the largest nearby city and the service center for the valley. Devils Backbone County Park - the county park with public creek frontage upstream. Chesapeake and Ohio Canal towpath - the public corridor along the Potomac at the confluence. Potomac River - the larger river receiving the creek below Sharpsbu...

When is the best time to fish the Antietam Creek?

Spring: strong steady flows, active smallmouth and the best wild trout fishing in the upper creek. Summer: the lower creek warms and fishes early and late, while the spring-fed upper water stays cool. Fall: cooling water and the most consistent smallmouth fishing of the year. Winter: cold and clear, with trout in the upper reaches and smallmouth holding deep and slow.

Where are the fishing regulations for the Antietam Creek?

Regulations change by season and section. Read the current rules on the Maryland agency site: https://dnr.maryland.gov/fisheries/Pages/regulations/index.aspx