FLOOD09697

• County: Statewide
• Community: Nationwide
• Basin: Statewide
• Title: Mathematical Modeling of a Sociological and Hydrologic Decision System
• Date: 6/1/1978
• Prepared By: Institute for Social Science Research on Natural Resources, Utah State Univ.
• Floodplain - Doc Type: Educational/Technical/Reference Information

UST OF FIGURES

Figure

Page

1.1 Watershed boundaries and locations of the streamflow gages climato-
logical stations within the study area . . . . . . . . . 4

1.2 Steps in the development and application of a simulation model 5

1.3 Steps in the development of a model of a real world system. . 6

1.4 Preliminary concepts and interactions relating to the sociologic part of the
hydrologic-sociology system and their relationship to the hydrologic part
of the model . . . . . . . . . . . . . 7

2.1 The general topography of the urbanized study area IS
2.2 Dividing the flood plain area into subzones . . . 16

2.3 Typical urban residenti;11 block showing the pervious and the impervious
areas. . . . . . . . . . . . . . . . . . . . . .. 16

2.4 Division of Mill Creek and Big Cottonwood Creek subzones into smaller
spatial units . . . . . . . . . . . . . . . . . . . 17

2.5 Sketch illustrating the characteristic impervious length. 4. for a given
catchment . . . . . . . . . . . . . . . . . . . 18

2.6 Figure showing the influence of the Wasatch Front on precipitation
patterns. . . . . . . . . . . . . . . . . . . . 20

2.7 Hydrologic instrumentation and the Thiessen polygons for precipitation
analysis within the urbanizing portion of the study area . . . . . 20

3.1 Schematic representalion of the steps used to obtain the runoff hydro-
graph ............... 23

3.2 A schematic diagram of a typical hydrologic system 24

3.3 Flow chart showing the various hydrologic process represented within
the daily time increment model. . . . .. . . . . . . . 26

3.4 Flow chart showing I.he various hydrologic process represented in the
hourly time increment model. . . . . . . . . . . . 26

3.5 Schematic flow chart for obtaining hydrograph of rainfall excess 28

3.6 Hydrographs of observed and computed slreamflow at Gaging Station No.
1698 on Mill Creek for the water year 1964. . . . . . . . . . . 33

3.7 Hydrographs of observed and computed streamflow at Gaging Station No.
1700 on Mill Creek for the water year 1964. . . . . . . . . . . 34

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