Sweetwater County, Wyoming
The land manager of the 600,000-acre Rock Springs Grazing Association needed a way to map and manage leases, surface owner agreements (SOA) and other land use issues that occur over a vast geographical area in Sweetwater County, Wyoming.
Coffey created a customized, user-friendly GIS platform to catalog and manage the lands, creating a vital link to information that is essential to current and future grazing operations in the area.
- Researched and combined the following isolated and discrete records into a comprehensive electronic dataset:
- GIS parcel ownership data from the county assessor’s office.
- Public land data from State and Federal GIS data warehouses.
- Hard-copy maps provided by RSGA of known land assets.
- Used the comprehensive electronic dataset to perform the following customized functions for the client:
- Perform gap analysis of spatial and tabular information to create a new comprehensive ownership layer.
- Develop a point snap-grid as a parcel sub-set from the BLM Geographic Coordinate Data Base (GCDB) Quarter-Quarter dataset, taking into account the many irregularities of the PLSS map information.
- Create ownership polygons using the GCDB-derived snap-grid for all land records obtained through BLM and county research. Edit layer using RSGA maps and documents.
- Establish layers for lease points and lease right-of-ways, and create surface owner agreements polygons, based on Access database information.
- Determine active oil and gas well layer from tabular information provided by Wyoming Oil and Gas Commission. Analyze and attribute SOA data with current, past or no-well information.
- Create a GIS data viewer showing all available information in a series of subject-related map views.
The Rock Springs Grazing Association continues to work with Coffey to further refine existing data layers and to populate new layers as other land use studies are commissioned. Coffey’s user-friendly GIS platform makes updates and long-term maintenance of the existing data highly streamlined. The project is adaptable to new software releases and can easily transition from a deployed, static application to a real-time server or Internet-based application for both use and data upkeep.