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Mountain Prairie Acres: Whole-Site Terrain and Water

The whole 10-acre lot to scale, north up, as it lies today: elevation and contours, where water goes, and slope. Base maps for planning future projects anywhere on the property.

1 · Elevation and contours
2 · Where water goes
3 · Slope and planning

Profiles, Spot Elevations, and Key Points

North–south profiles, north fence to south fence
East–west cross-sections (vertical scale exaggerated)

Spot elevations in feet, every 100 ft south of the north fence

Columns are feet east of the west fence. Shading follows the elevation colors on map 1. One meter is 3.28 ft.

Key points

How these maps were made

  • Elevations: USGS 3D Elevation Program (3DEP) 1 m lidar, fitted to the fence lines on USGS NAIP aerial imagery (331 × 1,292 ft fence to fence) and smoothed to about 5 ft. 1 m and 1 ft contours, slope, flow arrows, profiles, and spot heights come from that surface (data/site_terrain.js). The lidar was flown before the homestead pads were graded.
  • Flow paths, the main divide, the split line, and the drainage areas come from routing water downhill across that surface (each 5 ft cell to its steepest neighbor).
  • Homestead, driveway, and yard from the owner's drone photos (October 2026), fitted to the same imagery and lidar; planned buildings where the owner described them (data/site_grid.js). Orchard layout from the pollination grid (October 4, 2026), with R1 about 15 ft inside the south end of the 600 ft strip.
  • An earlier version of these maps traced the owner's USGS 1 m map screenshots; the screenshots were tilted, which shifted features by 10–30 ft, so the maps now use the lidar directly.
  • Soil: USDA NRCS Web Soil Survey report for the property, map unit 149, Simonton loam, 2 to 12 percent slopes.