Coronavirus (COVID-19) Notice
Although most refuge lands and outdoor spaces have remained open for the public to enjoy, we ask that you recreate responsibly.

  • Check alerts and local conditions on this website and call ahead for current information. Operations vary based on local public health conditions.
  • Consistent with CDC recommendations, all visitors (age 2 and older), who are fully vaccinated are required to wear a mask inside of federal buildings in areas of substantial or high community transmission.. All visitors who are not fully vaccinated must continue to wear masks indoors and in crowded outdoor spaces.
  • Most importantly, stay home if you feel sick and continue to watch for symptoms of COVID-19 and follow CDC guidance on how to protect yourself and others.


Wyoming Junior Duck Stamp 2016

Wyoming Jr. Duck Stamp Program soars!

K-12 students, submit your artwork up until the mid-March deadline! Here is the 2016 Best of Show painted by Bailey Schupp.

Junior Duck Stamp Program

Wyoming Toad

The Wyoming Toad

Captive Wyoming Toad 160x

The Wyoming toad was once a common sight in the Laramie Plains but in the mid 1970's populations began to decline and the toad was listed as endangered in 1984.

Learn more about the Wyoming toad

Partnership Efforts Important for Wyoming Toad

Science-driven partnership efforts are turning the tide for the endangered Wyoming toad. Learn more about this on page 18 of the Fall/Winter 2014 Fish and Wildlife News.

Fall/Winter 2014 Fish and Wildlife News

Other Lakes Close by

Although Mortenson Lake restricts public access to protect the Wyoming toad population, there are other lakes close by , such as Meeboer Lake, Gelatt Lake, Twin Buttes Lake and Lake Hattie Reservoir, which do not. In fact, Meeboer Lake is so close to Mortenson that you might want to keep your eyes peeled for a Wyoming toad sighting! It hasn't happened yet so be sure to let us know if you are the lucky first.

Public Access Areas in Wyoming
Refuge Closed

Mortenson Lake NWR Is Closed To The Public

Due to the endangered status of the Wyoming toad the refuge is closed to public use.

About the Complex

Arapaho NWR Complex

Mortenson Lake National Wildlife Refuge is managed as part of the Arapaho NWR Complex.

Read more about the complex
About the NWRS

National Wildlife Refuge System


The National Wildlife Refuge System, within the U.S. Fish and Wildlife Service, manages a national network of lands and waters set aside to conserve America's fish, wildlife, and plants.

Learn more about the NWRS