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 Boonville
 Code of Ordinances
 Appendix E. STORM DRAINAGE AND STORMWATER MANAGEMENT DESIGN MANUAL

  § VIII. Design review.  

Latest version.

  • Details and calculations covering the proposed storm drainage system shall be submitted for review by the city. The submitted information shall include all information necessary to build the system and to indicate conformance with this design criteria. Where required by the city, details and calculations shall be prepared by and bear the seal of a registered professional engineer.

    In addition to calculation forms included in this design manual, completed for each element of the system, the submittal shall include, as a minimum, the following:

    • Topographic map designating limits of the watershed tributary to the proposed system.

    • Aerial photography at 400 scale, obtained from city showing watershed boundaries, and the location of principal features of the proposed drainage system. Note thereon any changes in land use in the watershed that might impact runoff through the project area.

    If detention storage is proposed, the submittal shall also include the following:

    • Rainfall hyetograph plotted in inches per hour as ordinates, and time from beginning of storm as abscissas.

    • Inflow hydrographs plotted in units of cubic feet per second of inflow as ordinates, and time from beginning of storm as abscissas.

    • Maximum outflow rates, in cubic feet per second, and minimum storage volumes as determined in consultation with the city engineer.

    • Complete plans for grading, storm sewers, and inlets, outflow structures, dams, emergency spillways, and other appurtenances.

    • Slope, type, size, and complete flow calculations for outlet structures, spillways, and other waterways.

    • Stage-storage curves for proposed detention facilities plotted in units of detention facility water surface elevation (and depth) as ordinates, and cumulative volume of storage as abscissas.

    • Stage-storage curves for outlet works plotted in units of detention facility water surface elevation (and depth) as ordinates, and discharge rate in cubic feet per second (cfs) as abscissas.

    • Inflow and outflow hydrographs plotted in units of cubic feet per second of inflow and outflow as ordinates, and time from start of storm as abscissas. The inflow and outflow hydrographs shall be plotted and labeled to show total storage requirements and time to empty the detention facility.

(Ord. No. 4119, § 1(Exh. A), 6-16-08)