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USGS NRP Tucson: Sediment Impacts from Disturbed and Undisturbed Lands

The Vigil Network: Sarpy Creek

The Vigil Network: Sarpy Creek
Table 4 - Pebble Count

Sample Med Diameter (cm) Roundness
BM 1 to BM 2
11.2SR
21.7SA - A
31.7SA - A
41.2SR
52.0SR - SA
61.7R
71.6SA - SR
80.6SR
91.1SA
100.5SR
110.6SR
121.0SR - SA
131.2SA
140.9A
150.6SA
160.9SR
170.5SR
180.6SR
190.5R
200.4R
212.5SA -SR
229.0SA
232.4SA
241.1A
250.3SR
The largest clast is 24.0 cm
0.25 m upstream from brdge
12.0SA
21.2SA - SR
32.0SA
41.0SR
51.5SR
60.4R
76.0SA
81.2SA
93.3SA
101.7SA
111.4SR -SA
120.9SR
131.4SR
141.5SR
151.4SA
160.8R
171.8SA
180.7SR
190.5SA
200.8SA
211.9SA
221.0SA - SR
231.1SR
241.3SA - SR
250.8R
The largest clast is 8.7 cm

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