Hi Eileen,
Thank you for your question about eco lawns in Central Oregon. Following are two articles which discuss the pros and cons of using microclover:

Low Maintenance Turf? | College of Agricultural Sciences | Oregon State University
Lawns and Microclover | University of Maryland Extension (umd.edu)

The OSU article does provide contact information for questions. Nurseries that sell ecolawn seed mixes are also included. Please note that the research discussed has been done primarily in western Oregon. Microclover has been found to be successful as part of a seed mix for lawns, however, it does perform well by itself. Additionally, lawn alternatives such as microclover and wildflower mixes do need irrigation to weather the heat and drought conditions in Central Oregon.

Following are some recommended alternatives for Central Oregon lawns: Clump fescues, either native or ornamental, can be substituted for traditional lawns. Woolly thyme, or the use of a dry riverbed and plants are additional alternatives to turf grass. More information is provided in the following OSU Extension publication: Water-wise Gardening in Central Oregon | OSU Extension Catalog | Oregon State University

To get more information on lawn alternatives in Central Oregon, I recommend you call the Deschutes County OSU Extension office in Redmond at<personal data hidden>. Ask to speak with Amy Jo Detweiler (oregonstate.edu), a member of the Horticulture Staff. Amy Jo welcomes your home garden questions and is a great resource.