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(Photos 3,4) USGS 32237 The original image was taken on September 9, 1922. The recorded flow was 3,520 cfs. The original is good quality and shows the main channel well. The Three Canyon Creek washes are clearly discernible. Location: Mile 49.5 View: Upstream from a plateau overlooking Three Canyon. Matching Data: 9/6/96 2:30 p.m. Weather: Overcast Skies and Hot. Approximate Flow: ® 2,100 cfs. Film: TMAX 100 Exposure: 1/15 sec. @ f/22 Camera Height: 150 cm. Print Data: PC III, RC, F; Dektol 1:2. 20 sec. @ f/22. #11/2 PC filter. Photographer: Susie Holman To Locate Match Site: There is a huge cottonwood that sprawls across a beach just off the picture on river right. There are cattle trails that lead up to the scree slope and cliffs. Walk up toward a prominent ledge that overlooks the river. The site is below the second rock layer. There is a huge cairn built to mark the site. Geomorphic/Vegetation Changes: • Much more vegetation overall, especially on river right. • The cottonwood grove at the mouth of the creek is larger. • More cottonwood present along river right. • The dune area above the cottonwood grove located upstream from the mouth of the creek has been covered in vegetation. • The former beaches on river right are vegetated and stabilized. • More cottonwoods on river left, just before cliff area that juts into the water. • On river right, above the creek mouth, new vegetation extends into the river forming a point. This has created an eddy downstream. • More junipers and other water loving vegetation along creek bed. • More junipers overall near cliffs on the left side of image. • More sage in the foreground now. • River right, near the mouths of the two washes, there are changes in the shape of the deposits. • The beach between the two washes is just barely exposed and has no vegetation. (Boat parked on site) • The sand deposit below the gravel bar is also just exposed and has no vegetation. • Notice the almost exact same shape of the cobble deposit upstream of the highest drainage. (Center of photograph.) • Willows have overtaken the high flow terraces, perhaps will cause further narrowing.