Trout Unlimited (TU) is a national non-profit organization with over 300,000 members and supporters and seven members of their Board of Trustees. They are comprised of professionals that ensure that TU is a leader in fisheries restoration at the local, state, and national levels.  TU's mission encompasses 2 overarching goals:
- Conserve native coldwater trout species and the fisheries that rear them
- Restore the watersheds encompassing the native coldwater trout to enact modern assessment methods to assess the health of native trout species wherever they are naturally found .
To fulfill this mission, TU works with anglers who have a want to give back to the environment (who make a portion of TU's advocates) and uses the best available science and assessment methods for the each species of trout they aim to conserve, protect, and restore.
TU was founded in Grayling, Michigan in 1959 by fishermen who were united by their passion for trout fishing and their growing discontent with state's practice of stocking trout into their local waters.  In 1963, TU released its first policy statement, which later persuaded the Michigan Department of Natural Resources to reduce its policy of put-and-take stocking with fishery trout and rely more on natural populations. The reduction in reliance on put-and-take stocking spread to Illinois, Wisconsin, New York, and Pennsylvania, where other chapters of TU were soon created and advocated for an increase in natural trout populations. The National Conservation Agenda of TU is now set by a National Leadership Council. Most of the current TU body is comprised of volunteers and conservation professionals, whereas the remainder of the group is made up of passionate anglers. 
Trout Unlimited of California
TU is one of a number of environmental advocacy organizations (Non-Governmental Organizations (NGOs) and other Non-Profit Organizations in California's Central Coast Region) operating in California's Central Coast region. The 2018 Trout Unlimited of California mission statement is to protect, reconnect, restore, and sustain California's salmonid fisheries, their watersheds, and the diversity of their populations. . TU of California is active in the Central Valley, working to provide adequate passage for coldwater trout such as Rainbow and Steelhead trout. Beyond the Central Valley, TU of California is active in Truckee and the Lahontan Basin, which spans across Oregon, California, and Nevada .
Steinbeck Country Chapter of Trout Unlimited
Steinbeck Country Chapter of Trout Unlimited is located in Carmel. Their primary projects have dealt with work on behalf of the trout, salmon and Steelhead fisheries of the California's Central Coast Region. 
Some projects included:
- Implementing trout education curriculum in local classrooms in 2013 
- Encouraging fly fishing tours as a fundraiser and to spread education regarding the local trout in 2013 
- Helping with the 2016 land deal to convert a 140 acre golf course into park land and return 300 acre-feet of water back to lower river with the help of the Trust for Public Land, Monterey Peninsula Regional Park District, and Santa Lucia Conservancy 
- Cleaning up the Salinas River near Highway 1 from 2013 to 2015 for fishing access and healthy launches of Steelhead and Striped Bass .
- Trout Unlimited Website - About
- Trout Unlimited Website - History
- Trout Unlimited of California
- The Steinbeck Country Chapter of TU Website
- New land deal will benefit Carmel River Steelhead
- Watershed Issues
- Lagunita Creek Watershed
- Coho Salmon Crisis in the Central California Coast ESU
- Santa Lucia Conservancy
- Non-Governmental Organizations (NGOs) and other Non-Profit Organizations in California's Central Coast Region
- put-and-take stocking
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