• The calm, inviting waters of the Spokane Arm. Photo Credit: NPS\LARO\John Salisbury

    Lake Roosevelt

    National Recreation Area Washington

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Crayfish Study

Crayfish Study Map

Schools participating in The River Mile's Crayfish Study

Esri ArcGIS Online

Click on the map above to access the interactive Crayfish Study map.


Participation In the Crayfish Study

The Crayfish Study is a project of "The River Mile," a Kindergarten through 12th grade watershed health monitoring program. Participation in the Crayfish Study is open to any school group wishing to assist with this important study. If you wish to participate, please contact the program lead for The River Mile.

It is important that all groups make sure that their data is correct to the best of their ability, as many resource specialists and scientists are interested in the status of Crayfish in the Pacific Northwest. If you have any questionable data, make a notation in any comments section and say why it is questionable.

There are several different ways you and your students can participate in this study. At the most basic level go out, look for crayfish, identify their species and note their location (GPS with Latitude and Longitude). The most advanced level of participation involves setting traps for 24 hour periods of time, collecting core information about the shoreline and water, uploading your data to ArcGIS Online maps and sharing your information through your school project website. All levels of participation and observation are contributing very important scientific data. Scientists need to know what species are out there and where.

The study period is May 6th through October 31st. All groups must conform to their local and state fishing regulations.

If you have any questions please contact The River Mile's Program Lead.

Instructions for the Crayfish Study

TRM Crayfish Study Flyer
Survey and Analysis Plan for Crayfish Survey
Washington State Fishing Regulations

Background Information

Crayfish Id Key
Crayfish Facts
Crayfish Id Guide Pacific Northwest
Non-Native Crayfish

Data Collection/Submissions

The following data sheets are for field collection of data. Use all of them if you are using any type of trap or net. If collecting by hand, use only the "Crayfish Specimen Data Sheet."
Core Parameters Data Sheet
Crayfish Specimen Data Sheet
Trap Data Sheet

Please use this MS Excel data sheets for submission of data
Crayfish Excel Data Sheets File

Submit your completed data sheets to the Crayfish Study Program.

Crayfish Study Data

2012 NPS Crayfish Study Map
2013 TRM Crayfish Study Map
All Crayfish Data Map


Links to useful information

Washington Invasive Species Council
Washington Department of Fish And Wildlife Fishing Regulations

Data submission and sharing links

The River Mile Data Submission
ArcGIS Online

Trap Construction
TRM Crayfish Trap Construction

Did You Know?

Colville River.

The Colville River is one of four rivers that empty into Lake Roosevelt. The others are the Spokane, Sanpoil, and Kettle.