Source :August Miller, Deseret Morning News

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Presentation transcript:

Source :August Miller, Deseret Morning News GIS TOOL BAR FOR IDENTIFICATION OF PROPERTIES CLOSE TO CANALS WITH POSSIBLE FLOOD PROBLEM by J.J. Escurra Source :August Miller, Deseret Morning News Placing sandbags Thursday in an effort to stop the flooding of homes from Box Elder Creek in Brigham City.

Objectives Creation of a function that helps with canal’s inventory. Creation of function that calculates the maximum flow rate permissible in a canal. Creation of a function that calculates the surface run off flow. Creation of a function that identify the possible flood problems in a canal.

Methodology All the code was written in VBA Input information. a) Canal shapefile b) 8 Flow Direction c) Properties with owners 6 steps. Used equations. Surface Runoff Area using D 8 flow direction and modified David Tarboton code . Inventory of Canal from Diagnostic Walk Thru For a selected section Calculation of Runoff Flow using Rational Equation Calculation of Maximum Flow rate using Manning Equation Difference of Runoff and Maximum Flow rate and giving values of 0 and 1 for positives and negatives values.

Results To test the model data from Northern Logan Canal was used, the canal was GPSed only 5 kilometers from the total 24 kilometers of length

Calculation of the Surface Runoff Area

Calculation of the Surface Runoff Area gridshape([results])

Selection of Section

Filling in Data mr ml Total depth Canal width Free bord

Calculation of Runoff Flow

Observation of the Picture

Difference between Maximum Canal and Run off Flow

Conclusions