- Some aerial photos showing impacts on the park from the disc golf courses at the Hwy. 32 site in Upper Park.
- Some photos of Impacts at Disc Golf
- Impacts of Developed Recreation in Upper Park—more photos.
- What is the Real Cost of Disc Golf in Upper Bidwell Park? An article for the Butte Environmental Council's fall 2007 Environmental News.
- A map of the disc golf course location.
- Disc Golf and the Future of Bidwell Park, an article by Randy Abbott.
- A letter to the Bidwell Park and Playground Commission [pdf] outlines concerns that Friends of Bidwell Park have regarding the current disc golf site.
- The arborist's report [pdf, 584 KB] concerning the impact of disc golf on trees at the site of the disc golf courses in Upper Park.
- The 1993 Grant Deed from the Trust for Public Land [pdf 3.5 MB] to the City of Chico for the area of Upper Bidwell Park where the unofficial disc golf courses are located. Also, a letter from the Trust for Public Land reminding the city that they must comply with the restrictions in that deed.
- The Sierra Club Yahi Group Conservation Report on disc golf in Upper Park.
- Master Management Plan comments related to Disc Golf.
- The June, 2010 operating agreement between the City of Chico and ORAI for the disc golf course in the park off of Highway 32.
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Click for pdf- A Chico News & Review article on disc golf.
- A video showing erosion at the courses during wet weather, and another, shorter one.
- Soil compaction facts—impacts on tree growth.
- Save McLaren Park, a site dedicated to preserving a San Francisco neighborhood park.
