ArcGIS REST Services Directory Login | Get Token

Geology/DGS_UnconfinedAquiferBaseElevation (MapServer)

View In:   ArcGIS JavaScript   ArcGIS Online map viewer   Google Earth   ArcMap   ArcGIS Explorer

View Footprint In:   ArcGIS Online map viewer

Service Description:

This digital product contains gridded estimates of the elevation of the base of the unconfined portion of the Columbia aquifer for Sussex County, Delaware. Mapping was supported by the Delaware Department of Natural Resources and Environmental Control and the Delaware Geological Survey. These grids were produced with the methods described in Andres and Klingbeil (2006). Additional analyses of the hydrogeologic framework and grids are also contained in that report. Briefly, the method to determine the elevation of the base of the aquifer includes assessing the elevation of subsurface materials in descriptive and geophysical logs and using computer-based interpolation to estimate elevation across the study area. Separate grids were determined for eastern and western Sussex County and were merged and smoothed to minimize edge effects. The elevation grids has 30-m horizontal and 1-ft vertical resolutions. REFERENCES CITED Andres, A. S., and Klingbeil, A. D., 2006, Thickness and transmissivity of the unconfined aquifer, eastern Sussex County, Delaware: Delaware Geological Survey Report of Investigations No. 70, 19 p., 1 plate.

Map Name: Layers


All Layers and Tables

Layers: Description:

Copyright Text: Delaware Geological Survey

Spatial Reference: 102100  (3857)

Single Fused Map Cache: false

Initial Extent: Full Extent: Units: esriMeters


Document Info: Supports Dynamic Layers: false

MaxRecordCount: 1000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 0

Max Scale: 0

Child Resources:   Info

Supported Operations:   Export Map   Identify   Find   Return Updates   Generate KML