Citizen Science

The Great Chesapeake Invasives Count


April 1 - Oct 31, 2021


Chesapeake Watershed (virtual)



CCA Maryland & Yamaha Rightwaters present The Great Chesapeake Invasives Count, an angling based effort to provide important data to Maryland DNR, USFWS, and other management agencies on what you're seeing on the water AND to win prizes in the process.

Register for FREE to be entered to win monthly prizes.  Drawings are based on your catches you report each month and will occur on the last day of each month from April -Oct 2021


Register for FREE

Click here to register through the iAngler Tournament App.

CCA MD members get entered into additional drawings to win prizes. Become a member.

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How to Participate

The Great Chesapeake Invasives Count is managed in partnership with the Angler Action Foundation using the iAngler Tournament smartphone application.

To register for this event:

  1. Create a User Account at if you don't have one already & log in
  2. Visit The Great Chesapeake Invasives Count event page at iAngler and click "register as an individual"
  3. Complete the guided steps to register for this event
  4. Download the iAngler mobile app, head out on the water & start logging!
  5. Join CCA or make sure your membership is current for additional chances at additional prizes each month.  Visit to sign up today or renew your membership.

If you need assistance with logging in with your existing account or have any other registration issues, please contact David Sikorski via email or by texting or calling (443)621-9186

This is the logo you are looking for when downloading the app from you app store or google play.

Look for this logo when downloading the FREE iAngler Tournament app.

Sponsors & Promotional Partners

What is an Invasive Species?

An invasive species is an organism that causes ecological or economic harm in a new environment where it is not native.

Invasive species can harm both the natural resources in an ecosystem as well as threaten human use of these resources. An invasive species can be introduced to a new area via the ballast water of oceangoing ships, intentional and accidental releases of aquaculture species, aquarium specimens or bait, and other means.

Invasive species are capable of causing extinctions of native plants and animals, reducing biodiversity, competing with native organisms for limited resources, and altering habitats. This can result in huge economic impacts and fundamental disruptions of coastal and Great Lakes ecosystems.

(source: NOAA

What Invasive Species Should Anglers Target For This Event?


Introduced into the Chesapeake in the early 2000s, northern snakehead (Channa argus) like shallow, warm water with vegetation and submerged trees for cover. They boast a mottled pattern that looks similar to a python, and have a round head and large, prominent teeth. Much has been made of the fish’s introduction and status as an invasive species. Many scientists agree that more research will be necessary to determine any negative environmental impacts of the snakehead species introduced into the United States. Regardless, these transplants from Asia have spread throughout the Chesapeake Bay watershed with their populations continuing to increase. They are big, aggressive, strong, and delicious, making them a prime species for sport fishing

Blue Catfish

Blue Catfish are long and often slender with a deeply forked tail. A distinguishing feature of the blue catfish is that the anal fin margin, or edge, is straight as if it has been clipped with scissors. All other catfish species have rounded anal fins.

Blue catfish are typically a bluish, gray color on top with a silvery or white underside. They are the largest of the catfish family in North America and can attain weights in excess of 100 pounds. The Maryland state record blue catfish is 84 pounds.

As an introduced species, blue catfish are now commonly found in the tidal Potomac River and some of the other tributaries of the Chesapeake Bay. Studies are currently underway to determine their impact on other aquatic species.

Have you heard about an important study underway

PDF of Blue Catfish Study Info Sign

Flathead Catfish

Flathead differ greatly in appearance from most other catfish species. Flatheads have a squarish tail, sometimes slightly notched. Their backs and sides are often an olive or light brown color with darker mottles or specks. Their bellies are often white or pale in color. Their heads are compressed, or flattened, and they have a protruding lower jaw. Flathead catfish can reach sizes in excess of 100 pounds but much smaller specimens have been encountered in the Chesapeake Bay region.

Flathead are an introduced species and are currently found in only a few places in the Chesapeake Bay; the Potomac River, Upper Bay, Elk and Sassafras Rivers.

What Information Should Be Reported by Participants?

Fishery managers need help understanding where invasive species are being caught and what species anglers are catching.  Over time, this information may be used to build an understanding of the species, and support the science based management of our natural resources.

The Information per species that managers are seeking are:

  1. Lengths and weights of catches
  2. Stomach contents & the weight of them

All data should be submitted with a picture against a ruler, and the appropriate division/category should be selected in the app when submitting each item. ie: stomach contents/weight & location  (sample image stomach contents)

To qualify for a prize, anglers should also provide:

Location of their catch

This can be done via the iAngler Tournament App by allowing your location data to be accessed by the App. You may also manually provide your general water body location in the notes section of your catch. This information will not be shared with other anglers, it will simply be provided to fishery biologists to support their efforts to understand some basic population dynamics of these widely dispersed species.

If you keep a fishing log in a different format and would like to provide this data to our citizen science efforts, please let us know via email.

Monthly Drawings for Prizes April - October

A LIVE random drawing will be held on the CCA Maryland Facebook Page at the end of each month from April through October of 2021. You have multiple chances to enter:

  • One entry in the month that you register
  • One entry per catch logged in the month the drawing is for

To qualify, logged catches must include the general water body or GPS location of the catch and one or more of the following data points:

  • total length
  • weight
  • stomach contents

Prizes are provided by our participating promotional partners and sponsors.  Click here to find out how you can become a promotional partner TODAY

CCA Maryland members will be eligible for special prizes each month, so don't forget to JOIN CCA or renew your membership TODAY!

*each participant is limited to no more than two prizes per month. in the event that a winner is drawn a 3rd time, the drawing coordinator will select another prize winner at that time.

What is Citizen Science?

CCA Maryland's Citizen Science Campaign uses the fishing experiences of our members to help provide the data needed to properly manage and conserve our fisheries now, and into the future.

Citizen Science

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