07-09-18 Drainage and Flooding Committee Meeting

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List of Tables Table 1 — Manning's n Values............................................................................ Table 2 — Rainfall Intensity Coefficients........................................................... Table 3 — Harris County Hydrologic Region 3 Rainfall (inches) ....................... Table 4 — Harris County Hydrologic Region 3 Loss Parameters ....................... Table 5 — Farrington Drive Water Surface Elevations — Existing Conditions ... Table 6 — Farrington Drive Overflow Rates — Existing Conditions ................... Table 7 — Glen Meadows Rational Method Calculations ................................... Table 8 — North Avenue H Water Surface Elevations — Existing Conditions ... Table 9 - North Avenue H Overflow Rates — Existing Conditions .................... Table 10 — Farrington Drive Water Surface Elevations — Proposed Conditions Table 11 — Farrington Drive Overflow Rates — Proposed Conditions ............... Table 12 — Farrington Drive Overflow Rates — Difference (PR —EX) ................ Table 13 — North Avenue H Water Surface Elevations — Proposed Conditions Table 14 — North Avenue H Overflow Rates — Proposed Conditions ................ Table 15 — North Avenue H Overflow Rates — Difference (PR —EX) ................ List of Exhibits Exhibit 1 — Effective Floodplain Exhibit 2 — Farrington Drive Drainage Overview Exhibit 3 — Northern Ditch Drainage Overview Exhibit 4 — Existing Drainage System 5-year Inundation Exhibit 5 — Existing Drainage System 10-year Inundation Exhibit 6 — Existing Drainage System 100-year Inundation Exhibit 7 — Sheet Flow Patterns - West Neighborhood Exhibit 8 — Sheet Flow Patterns - North Neighborhood Exhibit 9 — Proposed Drainage Improvements Exhibit 10 — Proposed Drainage System 5-year Inundation Exhibit 11 —Proposed Drainage System 10-year Inundation Exhibit 12 — Proposed Drainage System 100-year Inundation 2 6 7 7 ... 12 ... 12 ... 13 ... 15 ... 15 ... 19 ... 19 ... 20 ... 20 ... 21 ... 21