Figure 2, shows the 34 primary streams defined within the Dashield's MAP area. A flash flood occurred within this basin on September 7, 1990. Stream subdivisions are smaller tributaries contained within primary streams or other stream subdivisions. Figure 3 shows the 40 stream subdivisions contained within the Dashield's MAP area. A traveling circus troop was camped along Plum Run the night of the flash flood in 1990.
Urban areas can experience dangerous flash flooding when storm sewers back up from intense rainfall.
Many of these urban areas are not directly impacted by stream flooding. Primary streams in the Dashield's MAP area. Rainfall accumulations are computed from successive DHR products, following as closely as possible the current Precipitation Rate and Precipitation Accumulation algorithms. Subdivisions in the Dashield's MAP area. The computed ABR values represent an area weighted average accumulation of all radar rainfall estimates in a watershed, including zero accumulations.