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Hydrologic & Hydraulic Analysis Hydrology – amount of water, minimum 2-, 10- and 100-year storms. (ultimate development). Hydraulics – how the water moves.

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Presentation on theme: "Hydrologic & Hydraulic Analysis Hydrology – amount of water, minimum 2-, 10- and 100-year storms. (ultimate development). Hydraulics – how the water moves."— Presentation transcript:

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2 Hydrologic & Hydraulic Analysis Hydrology – amount of water, minimum 2-, 10- and 100-year storms. (ultimate development). Hydraulics – how the water moves. Compare existing to proposed conditions. Methods used must be in the public domain and verifiable.

3 COMAR 26.17.04 Construction on Nontidal Waters and Floodplains H&H analysis required for changes to the course, current or cross-section of waters of the State (unless waived). Waters of the State includes the 100-year floodplain for all regulated streams. Stream restorations – analysis needed for proper design.

4 Increased risk of flooding to others from any analyzed storm (.10). Any area, not owned by the applicant, subjected to flooding increases must be purchased, placed in a designated flood easement, or addressed by other means. other means is typically affected property owner sign off. H&H Analysis used for:

5 Assure stability through sheer stress comparison of the project reach and immediately U/S and D/S (10%). Withstand flood forces. Changes to mapped FEMA floodplain. H&H Analysis used for:

6 How we can help: Pre-application meetings. Guidance on whether H&H will be required. Contacts:

7 WATERWAY CONSTRUCTION DIVISION CONTACTS BY COUNTY COUNTYPROJECT ENGINEERTELEPHONEEMAIL ADDRESS Frederick County Washington County, East of I-81 Wuhib Bayou410-537-3605wbayou@mde.state.md.us Allegany County Garrett County Washington County, West of I-81 Paul Busam410-537-3213pbusam@mde.state.md.us Prince Georges CountyImtiaz Choudhry410-537-3813ichoudhry@mde.state.md.us Carroll County Howard County Debra Correia410-537-3900dcorreia@mde.state.md.us Harford County Cecil County Tamene Dilnesahu410-537-3803tdilnesahu@mde.state.md.us Calvert County Charles County St. Marys County Mohammad Ebrahimi410-537-3816mebrahimi@mde.state.md.us Anne Arundel County Eastern Shore Kelly Flint410-537-3536kflint@mde.state.md.us Montgomery CountyHira Shrestha410-537-4247hshrestha@mde.state.md.us Baltimore City Baltimore County Phatta Thapa410-537-3641pthapa@mde.state.md.us

8 How you can help: Plan on providing H&H (money and time). Provide all data: input, output, summary tables. Provide an engineering narrative with assumptions used and conclusions reached.

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