| snippet:
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| summary:
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| extent:
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[[-80.6272563338556,39.6811612953397],[-74.6231375665456,42.287044275058]] |
| accessInformation:
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| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["ArcGIS","ArcGIS Server","Data","Map Service","Service"] |
| description:
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PASDA Map Service that includes the Topographic Wetness Index (TWI) database for the whole PA, in a 3 m cell resolution. PASDA Map Server:
https://imagery.pasda.psu.edu/arcgis/rest/services/pasda/PSU_DEP_TWI/MapServer
If you want to see areas that can retain more water and the "flow routing effect" as shown in the image below, we suggest doing the following:
1. Select the ArcGIS Online map viewer option: View In: ArcGIS Online map viewer 2. Once the ArcGIS map viewer is open, zoom in to your area of interest. There is a scale dependency of 1:100,000 to display the TWI data. Since it is a very large database, all the layers cannot be displayed at a county boundary level at the same time. Zoom in on the map to see the TWI data (shown in yellow).
3. Click on the three dots from the "PSU_DEP_TWI" layer and select Transparency. We suggest to set transparency to about 60-70%
4. Change the basemap. Go to the Basemap Gallery tab and Select "Imagery" as the Basemap.
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I’ll work on generating a tool that creates a binary classification as shown below. |
| licenseInfo:
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| catalogPath:
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| title:
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PSU_DEP_TWI |
| type:
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Map Service |
| url:
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|
| tags:
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[] |
| culture:
|
en-US |
| portalUrl:
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| name:
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PSU_DEP_TWI |
| guid:
|
0FA19265-7FFF-4069-BD72-2967196E5E4A |
| minScale:
|
0 |
| spatialReference:
|
NAD_1983_StatePlane_Pennsylvania_South_FIPS_3702_Feet |