g¡%RIVERMILEN ELEV_1964N ELEV_1975N ELEV_1978N  0.0 57.4 55.6 0.4 62.2 61.0 1.2 67.1 67.2 2.1 83.2 71.9 70.9 2.8 87.9 80.9 3.2 90.5 82.3 82.4 3.8 96.3 92.2 90.0 4.5 98.8 99.9 96.9 5.3 106.6 105.6 6.2 113.2 111.0 7.0 118.9 116.9 7.4 125.6 122.5 122.0 8.3 133.3 133.1 129.5 9.4 146.6 139.8 137.8 10.0 151.0 145.8 146.3 10.7 154.4 153.3 154.5 11.4 161.7 159.6 160.2 11.8 160.8 163.5 159.1 12.8 170.9 169.1 168.6 13.5 176.8 182.1 181.0 14.3 191.0 188.9 189.6