The Desert Laboratory

The Vigil Network
Aching Shoulder Slope: Cross-Sectional Survey of Elevation and Erosion, Station 13 + 00

Data Files:


Station location is referred to 16 + 00 at the watershed divide and 0 + 00 at the lower cross-section. For example, 3 + 00 means 300 feet upstream from the lower cross-section.

LB means left bank, facing downstream. LB BM is the left-bank bench mark, or reference point. The term "bench mark (BM)" refers to a 4-foot steel rod, 1/2 inch diameter, driven into the ground and protruding about 6 inches. RB BM is the right-bank bench mark.

LB BM and RB BM elevations, in feet, are referenced to an arbitrary elevation of 100.00 feet at the top of LB BM at station 0 + 00. The adding of 5,800 feet gives the approximate elevation above sea level.

Distance from LB BM indicates the distance, in feet, from left-bank bench mark toward right-bank bench mark.

Bench-mark elevations refer to the tops of the bench marks, and other elevations refer to the ground surface.

Erosion values, in feet, are measured from nail-washer (n/w) pins driven into the ground.

Distance from LB BM (ft) Elevation (ft) Erosion (ft), August 1963 to:
Aug 1963 Aug 1964 Aug 1964 Aug 1965 Aug 1968
0 (LB BM) 261.81 261.81
0.0 260.60 260.60 0.000 0.020 -0.015
5.0 259.84 0.010 0.010 0.025
7.5 259.23
10.0 258.86 0.005 0.005 0.005
12.5 258.34
15.0 257.91 -0.005 -0.010 0.005
16.3 257.81
17.0 257.66
19.0 256.22
20.0 255.99 -0.020 0.000 0.010
22.4 255.48
23.0 255.60
25.0 255.76 missing -0.025 0.060
25.7 255.82
26.8 255.38
27.5 255.85
27.8 255.54
30.0 256.25 -0.040 0.025 0.095
32.5 256.96
35.0 257.75 0.010 0.045 0.010
40.0 258.72 0.025 0.015 0.050
42.5 259.32
45.0 260.04 0.030 0.020 0.060
50.0 261.13 261.08 0.050 0.065
50 (RB BM) 263.29 263.29

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