caa a22 4500 469029161 CHVBK 20180323132738.0 cr unu---uuuuu 170328e19921201xx s 000 0 eng 10.1007/BF00406951 doi (NATIONALLICENCE)springer-10.1007/BF00406951 Muzik Ivan Department of Civil Engineering, University of Calgary, T2N 1N4, Calgary, Alberta, Canada aut Derivation of unit and flood hydrographs using a gis [Elektronische Daten] [Ivan Muzik] A geographic information system (GIS) supporting a flood hydrograph prediction software package is described. The hydrograph prediction method is based on the convolution of excess rainfall with a synthetic unit hydrograph, derived by the Soil Conservation Service runoff curve number and a regional dimensionless unit hydrograph method, respectively. The GIS uses a raster method to store the following data: land use and land cover, soil type, rainfall intensity-frequency-duration statistics, runoff curve numbers (CN), regional dimensionless unit hydrograph, and regional lag-time relationship. The GIS has also the capability of computing a number of watershed and hydrologic parameters required for predictions, such as a watershed average rainfall and CN value, area, centroid, stream length etc. Most of the data for such computations are input from a digitizer. Substantial time and cost savings are possible once the data base has been created. Application of the system is illustrated by an example predicting flood frequency curves for selected watersheds in Alberta's Rocky Mountain foothills, Canada. Kluwer Academic Publishers, 1992 Environmental Monitoring and Assessment Kluwer Academic Publishers 23/1-3(1992-12-01), 45-56 0167-6369 23:1-3<45 1992 23 10661 https://doi.org/10.1007/BF00406951 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00406951 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Muzik Ivan Department of Civil Engineering, University of Calgary, T2N 1N4, Calgary, Alberta, Canada aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 23/1-3(1992-12-01), 45-56 0167-6369 23:1-3<45 1992 23 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer