Watershed Delineation of Kolhapur District Maharashtra, India
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Transcript of Watershed Delineation of Kolhapur District Maharashtra, India
Department of Geoinformatics
CreatedBy
Abhijeet .B . MoreM . Sc. Geoinformatics
Watershed Delineation of Kolhapur District Maharashtra, India
Watershed Delineation of Kolhapur District:-Open With ArcMap Version 9.3
Firstly Add Maharashtra Elevation Data Or DEM
This is the Maharashtra state DEM data
Add the Kolhapur District Shapefile
Red colour Highlight the Shapefile of Kolhapur District
Select the Kolhapur District Shapefile Using Selection Tool
Right on the selected Shapefile Selection Create layer from Selected feature
Image shows the New Selected Feature Of Kolhapur District
Extract The Selected Feature
Go to Spatial Analysis Tools Extraction Extract By MaskInput raster Maharashtra Elevation data
Input raster or Feature mask data Kolhapur Output Selection
Change the Extracted Region Elevation Value & See the Extract Region and Unchecked Maharashtra DEM
Start With The Hydrology
Using Spatial Analysis Tools Hydrology Fill
Fill Tool BoxInput Surface Raster Extract
Output Surface Raster Your Output Path
Remove the Maharashtra DEM You have seen Fill Output file.
Using Spatial Analysis Tools Hydrology Flow DirectionInput Surface Raster Fill _Extract File
Output Flow Direction Raster Your Output Path
You have seen the Output of Flow Direction
Using Spatial Analysis Tools Hydrology Flow AccumulationInput Surface Raster FlowDir_Fill1
Output Flow Direction Raster Your Output PathOutput Data Type Float
You have seen the Output of Flow Accumulation
Create a Point Shapefile In ArcCatlogOpen ArcCatlog
Select The Folder
Right Click Your Input Folder New Shapefile
Name Point_ShapefileFeature Type Point
Click to Edit Click to Import option
Browse for Maharashtra DEM DataAnd Add
You have seen Georefrance the Shapefile Ok
You have got Georefrance the Shapefile
You have Seen Point Shapefile is create in Your Folder
Open ArcMapAdd Data Point Shapefile
You have seen Point Shapefile
Go to Editor Tool Click Editor Start Editing
Select Your Point Shapefile Ok
Go to Window Tool Magnifier
Take Point on Join streams
Go to Editor Tool Click Editor Save Edits Stop Editing
Go to Spatial Analysis Tool Hydrology Snap Pour PointInput raster or Feature Pour point data Point_ShapefilePour Point Field Id , Input accumulation raster
FlowAcc_Flow1Output Raster Output Path Ok
You have seen Output on screen in Magnifier tool box
Point has Snaps
Go to Spatial Analysis Tool Hydrology WatershedInput Flow direction raster FlowDir_Fill1
Input raster or Feature Pour point data SnapPeu_Point 1 Pour Point Field VALUE , Output Raster Output Path Ok
You have seen on the desktop screen Watershed Covered
Area
Go to Spatial Analysis Tool Hydrology BasinInput Flow direction raster FlowDir_Fill1
Output Raster Output Path Ok
You have seen on the desktop screen Basin Covered Area
Go To Conversion Tools From Raster Raster To Polygon
Input raster Basin_flowDi2, Field (optional) VALUE
Output Polygon Features Output PathClick on the Simplify Polygons Box Ok
You have seen on the desktop screen Polygon Covered Area
Go to Spatial Analysis Tool Hydrology flow LengthInput Flow direction raster FlowDir_Fill1
Direction of measurements DOWNSTREAM Output Raster Output Path Ok
You have seen on the desktop screen Flow Length Covered Area
Go to Spatial Analyst Raster CalculatorClick on IsNull option In bract Click and Insert Layers
FlowLen_Flow1 Insert >= 3000 Evaluate
You have seen on the desktop screen
Calculated Covered Area
Go to Spatial Analysis Tool Hydrology flow LengthInput Flow direction raster FlowDir_Fill1
Direction of measurements DOWNSTREAM , Input weight Raster Extract ,Output Raster Output Path
Ok
You have seen on the desktop screen
Flow Length 2 Covered Area
Go to Spatial Analyst Raster CalculatorClick on IsNull option In bract Click and Insert Layers
FlowLen_Flow2 Insert <= 3000.1 Evaluate
You have seen on the desktop screen
Calculated 2 Covered Area
Go to Spatial Analysis Tool Hydrology Stream to FeatureInput stream raster Calculation2
Input Flow direction raster FlowDir_Fill1 Output Raster Output Path Ok
You have seen on the desktop screen Stream Feature In Vector Layer Covered
Area
Thank You