Type Shapefile
To show the watersheds on Chuuk.
This dataset shows the principal watersheds (drainage basins) on Chuuk. It was derived by Maria Kottermair, Island Research & Education Initiative (iREi)(2020). Basin boundaries were delineated through hydrological modeling using a 10-meter Digital Elevation Model (DEM) by U.S. Geological Survey based on topography compiled in 1968. Note that basin boundaries shown are modeled and, as such, reflect the DEM and not necessarily actual situation on the ground. The watershed boundaries may differ from actual management units, especially as smaller basins were sometimes merged to a ‘principal’watershed to avoid too many small remnant basins.
Maria Kottermair (iREi)
There are no expressed warranties associated with the release of these databases. Specifically, no warranty is made that the GIS data or any subsequent updates will be error free and no warranty is made regarding the positional or thematic accuracy of the GIS data. The GIS data and any features it depicts do not represent or confer any legal rights, privileges, benefits, boundaries or claims of any kind.
There is no extent for this item.
There is no scale range for this item.
The dataset is included in the Digital Atlas of Micronesia, module Chuuk, by Island Research & Education Initiative (iREi) in collaboration with Water and Environmental Research Institute of the Western Pacific (WERI) at the University of Guam and funding from United States Geological Survey (USGS) under WRRI 104-B Program and FSM Department of Environment, Climate Change & Emergency Management (DECEM).
Maria Kottermair (iREi)
See access and use constraints information.
There are no expressed warranties associated with the release of these databases. Specifically, no warranty is made that the GIS data or any subsequent updates will be error free and no warranty is made regarding the positional or thematic accuracy of the GIS data. The GIS data and any features it depicts do not represent or confer any legal rights, privileges, benefits, boundaries or claims of any kind.
1. Ran hydrologic model using ArcHydro (fill, flow direction, flow accumulation, etc); 2. Adjoined catchments further processed: a. Clipped output features with updated shoreline; b. Extracted only major watershed polygons (deleted smaller drainage basins within larger polygons); c. Merged remnant drainages (along coast) into single polygon, d. Edited polygon boundaries if neccessary to address artifacts from the model output; e. Formatted attribute table.
To delineate major watersheds.
10-meter Digital Elevation Model (DEM) based on topography compiled in 1968.
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Feature geometry.
Esri
Coordinates defining the features.
Original and processed data