El Dorado Golf Course's Blue layout is a Jerry Matthews design located in Mason, Michigan, a small city just south of Lansing in the state's lower peninsula. Matthews, a regional architect active primarily in Michigan during the latter decades of the twentieth century, designed numerous courses across the state with an emphasis on playability for everyday golfers while incorporating the natural terrain features common to southern Michigan's gently rolling farmland and woodland settings. The Blue course at El Dorado occupies terrain typical of the Ingham County landscape, characterized by modest elevation changes, mature tree corridors, and open areas that once served agricultural purposes. The routing likely takes advantage of existing woodlots to define holes while incorporating water features—ponds or wetlands—that are common in this region's glacially influenced topography. Matthews's design approach generally favored strategic variety over severe difficulty, offering multiple routes of play and manageable challenges for mid-handicap players while still requiring thoughtful course management. The facility serves the greater Lansing metropolitan area and surrounding communities, providing accessible daily-fee golf in a region where public courses outnumber private clubs. The course reflects the practical design sensibilities of its era, when many Michigan courses were built to accommodate growing participation in the game without the extensive earthmoving or dramatic features that characterize more contemporary designs. El Dorado represents the kind of straightforward, tree-lined parkland golf that defines much of the Midwest's public golf landscape.