Hendrickson 1950 Journal Aug. 27 Upper Covington Flat, Riverside Co., Calif. 6:30 A.M. = 24.0°C. Upper Covington Flat is a N.-S.-elongate bowl with a fairly gentle W. slope (up to a steeper W. rim where the last 100 ft. ↑ of rise is fairly steep) and a more steep and rugged E. slope. The drainage of the flat falls fairly near the E. slope. The entire bowl appears to drain through a notch in the E. side near the S. end, and the canyon starting here is the one which becomes the first ½ wash S. of camp. The vegetation of the flat itself appears to be primarily Joshua tree-juniper-bunch grass. About 10 yds. down the W. slope of the ridge separating Upper from Lower Covington Flat, found 3 Rock Squirrel (?) holes which had apparently been extensively excavated by a badger. Out on the Upper Flat I saw several other similar areas of what appeared to be badger workings. Fresh gopher workings were also fairly common - although widely-scattered - on the Upper Flat. & Twice I saw what might have been Digo tracks in areas of fine sand.