Retention of the First Inch of Runoff in Coastal Areas

by Raymond A. Pittman, Thomas & Hutton Engineering Co, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


More and more state agencies are requiring development to retain the first inch of runoff from impervious coverage and release this runoff only through evaporation and/or infiltration. This regulation, though justifiable, is extremely difficult to comply with in many coastal regions due to the areas' physical characteristics. These characteristics have severe design impacts due to the extremely high ground water tables, highly impervious soil conditions, extremely flat topography and minute evaporation rates. These obstacles compounded with the current lack of remedies for retention must be addressed and answered in the immediate future. The need is urgent because coastal areas are rapidly becoming the most sought after land in the United States and this same ecology is also the most susceptible to destruction.

Subject Headings: Runoff | Evaporation | Sea water | Laws and regulations | Groundwater | Soil water | Topography | Permeability (soil) | United States

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