Chinook salmon in the Middle Fork of the Salmon River

Updated August 14, 2018

The Middle Fork basin contains some of the best Chinook salmon habitat in the entire Columbia River basin. The Middle Fork Chinook salmon population has not been genetically altered by hatchery fish, a rarity in the continental United States for these fish. Ramshorn Redd 2014 Sometime in late summer-early fall, salmon prepare their spawning nests (redds) in the gravel at the bottom of the river, where they bury their eggs. The majority of these redds are created in the tributaries to the Middle Fork, but many are also built in the mainstem, and boaters and fishermen should avoid disturbing these nests.

When redds are located, they will be marked with orange flagging, a visual signal to boaters that they should move as far away as safely possible to the opposite side of the river. When orange flagging is spotted, this will indicate a redd within the next 100 feet; active spawning may be occurring. Please float quietly as far from the redd as possible and avoid standing up to look; this usually spooks them away from the redd. Boaters should read the flagging protocol for specific instructions for floating during the active spawning season (Aug. 15-Sept. 15) and additional information.

Flagging is pulled late in the fall. Fall and spring boaters are asked to avoid disturbing these spawning sites by using the maps to avoid redd damage. Spring boaters are asked to avoid redds until mid-June, when the fry emerge from the redds.


Here's a picture of a redd at Ramshorn (the light spot in the middle of the photo).  Airplane redd - 2007


In 1995, researchers began to document redds in the mainstem of the Middle Fork. Because the Chinook is listed as an endangered species, consultation was needed to identify ways to mitigate potential impacts for recreational boating. Click to see the cumulative map from 2009 through 2013.

This consultation resulted in a Biological Opinion which outlined several mitigation measures to help protect spawning Chinook salmon. To read the two related News Releases, click here.

Chinook salmon mitigation measures include:

  • Cancelled reservations for launch dates will not be reissued after March 15th.
  • Launches originating on Aug. 15 through Sept. 15 will be limited to 12 boats per permit.
  • Grouping of parties and quiet zones as boaters float past identified redd locations.
  • To reduce the threat of importing Aquatic Invasive Species (AIS), education will be added to the mandatory boater orientation sessions. AIS information will also be included in the permit holder’s materials. See Stop Aquatic Hitchhikers to learn more about preventing the spread of AIS.
  • Require all craft be dry and clean to protect the Middle Fork from invasive species; i.e., boats not transporting water or debris from other systems. Clean means no vegetation, mud, or debris clinging to boats or equipment. Dry means no standing water in boats or equipment and no wet equipment. It will be the responsibility of the permit holder to ensure that all craft and equipment floating under the permit comply with this requirement.
  • Boats will be checked at the launch sites to ensure they are cleaned, drained and dry. For specifics, see the AIS Screening Protocol document.
  • Information and Education for boaters about the spawning Chinook salmon and how to avoid disturbing spawning fish or damaging redds. Please read Sharing the River with the Chinook Salmon brochure.
  • Campsite closures may be implemented if a redd is established in such a way that boaters would have to disturb spawning fish or the redd to land or launch at that camp.

To see redd locations from previous years, click on these maps:

2017 Chinook Redd Maps - Middle Fork of the Salmon River

2016 Chinook Redds - Middle Fork of the Salmon River

2015 Chinook Redds in the mainstem of the Middle Fork of the Salmon River * 2015 Chinook Redds in Marsh Creek and upstream of Boundary Creek

 2014 Middle Fork Salmon Redds 

2013 Middle Fork Redd Map * 2013 Marsh Creek Redds  

 Chinook redd locations on Marsh Creek and the Middle Fork 2012

Chinook redds on Marsh Creek - 2011 * Chinook redds - Dagger Falls to Pistol Creek - 2011 * Chinook redd - White Creek to Loon Creek - 2011