Laserfiche WebLink
• 2.3.2.4 Summary <br /> A comparison of the snowmelt and rainfall runoff results is provided in the <br /> following table. The values that were used for interceptor ditch design are <br /> highlighted and underlined. <br /> SUMMARY OF RUNOFF CALCULATIONS <br /> 10-YEAR 100-YR <br /> SNOWMELT SNOWMEL RAINFALL RAINFALL 10-YEAR <br /> PEAK T PEAK PEAK RUNOFF <br /> SUB-BASIN RUNOFF DAILY RUNOFF RUNOFF VOLUME <br /> (cfs) VOLUME (cfs) (cfs) (CF) <br /> (CF) <br /> Al 1.9 15,600 1.9 3.7 3,920 <br /> A2 2.1 17,700 2.3 4.5 3,920 <br /> A3 2.7 22,200 2.7 5.2 3,920 <br /> East Ditch (Sum <br /> • of Al and V2 of 2.95 — 3.05 5.95 <br /> A2) <br /> West and North <br /> Ditch (Sum of A3 <br /> and Y:of A2) 3.75 — 3.85 7.45 <br /> Total 6.7 55,500 6.9 13.4 11,760 <br /> 2.3.3 Results of Evaluation — Ditch Sections and Profiles and Sediment <br /> Trap <br /> 2.3.3.1 Ditch Sections and Profiles <br /> The design cross-sections of the interceptor ditches are shown in Figure 4. <br /> Calculations of the expected depth of flow in each ditch are presented in <br /> Appendix E for varying discharge rates. <br /> • AWNEWSM <br /> p. <br /> Jvna 1 1 1 <br /> TR 1. <br />