The Vigil Network: Ski Basin Slope
Mass-Movement Data
Note: Minus values are uphill of line of sight.
Note: Southeast BM was reset in 1966 to correct for misalignment. The two chiseled bench marks were installed at this time to further define the line of sight. The instrument is set over the BM at station -11.7 feet and sighted to the N.W. BM and checks on the line of sight are made to the S.E. BM and the BM at station 46.9 feet.
| Pin Number | Dist. from S.E. BM | Ground Slope | August, 1963 | August, 1964 | November, 1966 | November, 1966 reset | November, 1967 | August 1963 to November 1967 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (ft) | (°) | Dist. from line of sight (in.) | Prot. above gd. sur. (in.) | Dist. from line of sight (in.) | Prot. above gd. sur. (in.) | Dist. from line of sight (in.) | Prot. above gd. sur. (in.) | Pin tilt (°) | Dist. from line of sight (in.) | Prot. above gd. sur. (in.) | Pin tilt (°) | Dist. from line of sight (in.) | Prot. above gd. sur. (in.) | Pin tilt (°) | Downslope movement (in.) | Erosion (in.) | Pin tilt (°) | |
| BM | -11.7 | (chiseled depression and circle on rock) | - | - | - | 0.00 | - | - | - | - | - | - | - | - | ||||
| S.E. BM | 0 | (iron pin) | -0.38 | - | - | 0.00 | - | - | - | - | - | - | - | - | ||||
| 1 | 8.5 | 35 | -0.22 | 3.5 | -0.27 | 3.0 | -0.26 | 3.2 | 0 | 0.11 | 3.2 | 0 | 0.10 | 4.10 | 0 | -0.05 | 0.60 | 0 |
| 2 | 11.7 | 34 | 0.15 | 2.3 | 0.23 | 2.0 | 0.76 | 2.0 | 0 | 1.09 | 2.0 | 0 | 1.08 | 2.60 | 0 | 0.60 | 0.30 | 0 |
| 3 | 16.0 | 20 | -0.71 | 3.0 | -0.75 | 3.0 | -0.29 | 3.1 | 0 | 0.03 | 3.1 | 0 | 0.00 | 3.00 | -8 | 0.39 | 0.00 | -8 |
| 4 | 21.0 | 23 | 1.20 | 2.0 | 1.36 | 2.3 | 1.89 | 2.3 | 2 | 2.19 | 2.3 | 2 | 2.12 | 2.55 | 4 | 0.62 | -0.05 | 4 |
| 5 | 26.5 | 37 | -1.98 | 3.0 | -2.28 | 3.0 | -1.27 | 3.2 | 0 | -1.00 | 3.2 | 0 | -0.45 | 3.25 | -2 | 1.26 | -0.15 | -2 |
| 6 | 38.1 | 16 | 1.63 | 2.0 | 1.70 | 3.1 | 2.18 | 2.1 | 0 | 2.41 | 2.1 | 0 | 2.40 | 2.75 | 0 | 0.54 | 0.75 | 0 |
| 7 | 43.5 | 6 | 2.85 | 2.5 | 2.78 | 3.5 | 3.53 | 2.3 | 2 | 3.74 | 2.3 | 2 | 3.63 | 3.15 | 0 | 0.59 | 0.65 | 0 |
| BM | 46.9 | (chiseled depression and circle on rock) | - | - | - | 0.00 | - | - | - | - | - | - | - | - | ||||
| 8 | 48.7 | 16 | -2.49 | 2.6 | -2.00 | 2.6 | -1.69 | 2.7 | 0 | -1.50 | 2.7 | 0 | -1.48 | 2.90 | 0 | 0.82 | 0.30 | 0 |
| 9 | 51.5 | 23 | 0.00 | 3.0 | 0.32 | 3.6 | 0.68 | 3.2 | 0 | 0.85 | 3.2 | 0 | 0.90 | 3.00 | 0 | 0.93 | 0.00 | 0 |
| 10 | 54.2 | 14 | -0.31 | 2.3 | -0.20 | 3.0 | 4.48 | 2.3 | 30 | -0.63 | 3.8 | 0 | 4.80 | 4.20 | 45 | 10.22 | 0.40 | 75 |
| 11 | 59.0 | 8 | 0.68 | 2.4 | 0.95 | 2.5 | 1.35 | 2.2 | 0 | 1.50 | 2.2 | 0 | 1.58 | 2.35 | 0 | 0.75 | -0.05 | 0 |
| 12 | 64.1 | 37 | 0.79 | 3.0 | 1.20 | 3.6 | 2.15 | 0.9 | 0 | 2.28 | 0.9 | 0 | 2.25 | 1.50 | 0 | 1.33 | -1.50 | 0 |
| 13 | 69.1 | 35 | 0.48 | 2.0 | 0.65 | 2.9 | 1.21 | 2.4 | 0 | 1.32 | 2.4 | 0 | 1.28 | 2.90 | 0 | 0.69 | 0.10 | 0 |
| 14 | 74.0 | 35 | 0.15 | 2.5 | 0.40 | 2.8 | 0.84 | 2.4 | 0 | 0.92 | 2.4 | 0 | 1.05 | 2.70 | 0 | 0.82 | 0.20 | 0 |
| 15 | 80.3 | 24 | 0.40 | 2.2 | 0.30 | 2.6 | 1.22 | 2.5 | 0 | 1.28 | 2.5 | 0 | 1.35 | 2.40 | 0 | 0.89 | 0.40 | 0 |
| 16 | 84.5 | 19 | -1.41 | 2.4 | -1.08 | 3.0 | 1.26 | 1.8 | 15 | -1.45 | 1.6 | 0 | -1.65 | 1.55 | 0 | 2.47 | -0.65 | 15 |
| 17 | 88.2 | 15 | -1.55 | 2.0 | -1.35 | 2.7 | 1.02 | 1.4 | 10 | -1.55 | 2.5 | 0 | -1.41 | 2.60 | 0 | 2.71 | -0.05 | 10 |
| N.W. BM | 95.0 | (iron pin) | 0.00 | - | - | 0.00 | - | - | - | - | - | - | - | - | ||||
