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Sanderson Gulch Major <strong>Drainage</strong>way Plan<br />

<strong>Baseline</strong> <strong>Hydrology</strong> <strong>Report</strong><br />

<strong>October</strong> <strong>2012</strong><br />

Table B-2 1972 Sanderson Gulch MDP 100-year 2-hour Rainfall Distribution<br />

NS‐5,6, S‐12,13 S‐1 S‐2, S‐3 S‐4 S‐5,6 S‐7<br />

Point<br />

Point<br />

Point<br />

Point<br />

Point<br />

Point<br />

Curve<br />

Curve<br />

Curve<br />

Curve<br />

Curve<br />

Curve<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Value<br />

Value<br />

Value<br />

Value<br />

Value<br />

Value<br />

(in/hr) (Min) (in) (in/hr) (Min) (in) (in/hr) (Min) (in) (in/hr) (Min) (in) (in/hr) (Min) (in) (in/hr) (Min) (in)<br />

2.1 0 0 0.00 2.26 0 0.00 0.00 2.23 0 0.00 0.00 2.18 0 0.00 0.00 2.2 0 0.00 0.00 2.17 0 0.00 0.00<br />

10 0.13 0.06 10 0.14 0.06 10 0.14 0.06 10 0.13 0.06 10 0.14 0.06 10 0.13 0.06<br />

20 0.17 0.08 20 0.18 0.08 20 0.18 0.08 20 0.18 0.08 20 0.18 0.08 20 0.18 0.08<br />

30 0.35 0.17 30 0.38 0.17 30 0.37 0.17 30 0.36 0.17 30 0.37 0.17 30 0.36 0.17<br />

40 1.03 0.49 40 1.11 0.49 40 1.09 0.49 40 1.07 0.49 40 1.08 0.49 40 1.06 0.49<br />

50 0.27 0.13 50 0.29 0.13 50 0.29 0.13 50 0.28 0.13 50 0.28 0.13 50 0.28 0.13<br />

60 0.15 0.07 60 0.16 0.07 60 0.16 0.07 60 0.16 0.07 60 0.16 0.07 60 0.16 0.07<br />

70 0.09 0.04 70 0.10 0.04 70 0.10 0.04 70 0.09 0.04 70 0.09 0.04 70 0.09 0.04<br />

80 0.07 0.03 80 0.08 0.03 80 0.07 0.03 80 0.07 0.03 80 0.07 0.03 80 0.07 0.03<br />

90 0.07 0.03 90 0.08 0.03 90 0.07 0.03 90 0.07 0.03 90 0.07 0.03 90 0.07 0.03<br />

100 0.06 0.03 100 0.06 0.03 100 0.06 0.03 100 0.06 0.03 100 0.06 0.03 100 0.06 0.03<br />

110 0.06 0.03 110 0.06 0.03 110 0.06 0.03 110 0.06 0.03 110 0.06 0.03 110 0.06 0.03<br />

120 0.05 0.02 120 0.05 0.02 120 0.05 0.02 120 0.05 0.02 120 0.05 0.02 120 0.05 0.02<br />

Total 2.50 1.19 Total 2.69 1.19 Total 2.65 1.19 Total 2.60 1.19 Total 2.62 1.19 Total 2.58 1.19<br />

S‐8, NS‐2,3,4 S‐9,10,11 S‐14 SS‐1,2 NS‐1<br />

Point<br />

Point<br />

Point<br />

Point<br />

Point<br />

Curve<br />

Curve<br />

Curve<br />

Curve<br />

Curve<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Rainfall Time Depth<br />

Value<br />

Value<br />

Value<br />

Value<br />

Value<br />

(in/hr) (Min) (in) (in/hr) (Min) (in) (in/hr) (Min) (in) (in/hr) (Min) (in) (in/hr) (Min) (in)<br />

2.15 0 0.00 0.00 2.12 0 0.00 0.00 2.07 0 0.00 0.00 2 0 0.00 0.00 2.13 0 0.00 0.00<br />

10 0.13 0.06 10 0.13 0.06 10 0.13 0.06 10 0.12 0.06 10 0.13 0.06<br />

20 0.17 0.08 20 0.17 0.08 20 0.17 0.08 20 0.16 0.08 20 0.17 0.08<br />

30 0.36 0.17 30 0.35 0.17 30 0.35 0.17 30 0.33 0.17 30 0.36 0.17<br />

40 1.05 0.49 40 1.04 0.49 40 1.02 0.49 40 0.98 0.49 40 1.04 0.49<br />

50 0.28 0.13 50 0.27 0.13 50 0.27 0.13 50 0.26 0.13 50 0.27 0.13<br />

60 0.15 0.07 60 0.15 0.07 60 0.15 0.07 60 0.14 0.07 60 0.15 0.07<br />

70 0.09 0.04 70 0.09 0.04 70 0.09 0.04 70 0.09 0.04 70 0.09 0.04<br />

80 0.07 0.03 80 0.07 0.03 80 0.07 0.03 80 0.07 0.03 80 0.07 0.03<br />

90 0.07 0.03 90 0.07 0.03 90 0.07 0.03 90 0.07 0.03 90 0.07 0.03<br />

100 0.06 0.03 100 0.06 0.03 100 0.06 0.03 100 0.06 0.03 100 0.06 0.03<br />

110 0.06 0.03 110 0.06 0.03 110 0.06 0.03 110 0.06 0.03 110 0.06 0.03<br />

120 0.05 0.02 120 0.05 0.02 120 0.05 0.02 120 0.05 0.02 120 0.05 0.02<br />

Total 2.56 1.19 Total 2.52 1.19 Total 2.46 1.19 Total 2.38 1.19 Total 2.54 1.19<br />

Appendix B ‐ Hydrologic Analysis

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