Standard Slope Function

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Presentation transcript:

Standard Slope Function b c d e f g h i

Aspect – the steepest downslope direction

a b c d e f g h i

- Direction of Steepest Descent Hydrologic Slope - Direction of Steepest Descent 30 30 80 74 63 69 67 56 60 52 48 80 74 63 69 67 56 60 52 48 Slope: ArcHydro Page 70

Eight Direction Pour Point Model 32 16 8 64 4 128 1 2 ESRI Direction encoding ArcHydro Page 69

The D Algorithm  If 1 is not fit within the triangle the angle is chosen along the steepest edge or diagonal resulting in a slope and direction equivalent to D8