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Enjoy the Outdoors Safely

Heat Exhaustion

heat exhaustion

Heat exhaustion isn’t just something that happens in one afternoon, it can occur after you've been exposed to hot and humid temperatures for several days. Some of the first signs are excessive thirst, weakness, and headache. These are all signs of dehydration in the body, if untreated salt depletion can occur. With that you may experience nausea and vomiting, muscle cramps, and even dizziness. If you or anyone you are with experience these symptoms, it’s best to head inside or at least to a shady area, drink plenty of water, and remove any unnecessary clothing or items such as binoculars, backpacks, or photo vest. If symptoms don’t subside with these adjustments, seek medical help. Heat exhaustion can progress to heat stroke, which can cause brain damage and even cause death. Recovery from heat exhaustion can take several days, so don’t overdo it too quickly. Even wildlife knows to rest in the hottest parts of the day.

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  

Follow NWRS Online


Refuge Report

  • Waterfowl Quota Hunt


    Sign-up for the waterfowl quota hunt begins September 1st and last through October 15th! Fill out a postcard with your name, address, and phone number. Postcards can either be mailed or dropped off at headquarters. Only one entry allowed per person. Postcards must be received by October 15th to be considered for the draw. Individuals under the age of 16 are eligible for the youth hunt weekend. For more information on the quota hunt please see our hunting brochure.

    Refuge Brochures
  • Mourning Dove

    dove 200x218

    The Mourning Dove is an elegant, slender-tailed bird that can be easily identified by its hollow-sounding “coo-OO-oo” call. It is the most abundant and widespread bird species in North America, and is also the most frequently hunted species in North America.

    Hunters and Birdwatchers can learn more about mourning doves here!
  • Outdoor Classroom or Outdoors in the Classroom?!

    Animal Olympics shore bird

    School is back in session, and the staff at Clarks River National Wildlife Refuge are ready to make this year fun! Refuge staff can visit your classroom, or we can help you get out of the classroom by planning an exciting field trip!

    For Educators Page
Page Photo Credits — All photos courtesy of USFWS unless otherwise noted., Cope's Gray Tree Frog - aeller/usfws, Tick - mpound/USDA
Last Updated: Oct 08, 2014
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