Summary of data for erosion pins placed in wall of headcut, Cañada de la
Cueva, N. Mex., 1970-1972.
Number of Pin (First placed on Aug. 19, 1970)
Net Erosion Measured in 1971 (feet)
Net Erosion Measured in 1972 (feet)
June 24
July 26
July 27
August 17
September 12
1
(1)>0.4
(4)1
0.04
(6)2
0.33
2
0.30
(1)>0.4
(4)4
(6)6
(8)2
3
(2)1
(1)>0.4
(4)7
(6)8
(8)8
4
(1)>0.4
(1)>0.4
(4)11
(6)11
(8)16
5
0.07
0.25
0.33
0.42
0.33
6
(1)>0.4
0.09
(4)2
(6)2
0.26
7
0.00
0.00
0.00
0.00
0.00
8
0.21
(1)>0.4
0.12
(7)2
0.26
9
0.00
0.11
0.05
0.00
(9)2
10
(3)----
0.09
(5)0.00
(7)1
0.22
(1) Pin destroyed; amount of erosion estimated. (2) Pin destroyed; erosion measured by planetable survey on
June 25, 1971. (3) Pin first placed on June 25, 1971. (4) Pin destroyed; erosion since June 25, 1971, measured
by planetable survey on Aug. 2, 1971. (5) No erosion at pin, but water spilled at this place during
storm of July 26, 1971. (6) Pin destroyed; erosion since Aug. 2, 1971, measured
by planetable survey on Aug. 20, 1972. (7) Pin destroyed; erosion since Aug. 19, 1970, measured
by planetable survey on Aug. 20, 1972. (8) Pin destroyed; erosion since Aug. 20, 1972, measured
by planetable survey on Sept. 12, 1972. (9) Pin destroyed; erosion since Aug. 19, 1970, measured
by planetable survey on Sept. 12, 1972.
