v8, November 5, 2026. New: water (watersheds, flow paths, flood trouble points, storms, basins), wildlife (mapped corridors, a corridor estimate, forage and water), seasons, change and heat from 2022 to 2026 (greenness month by month, canopy water by season, summer ground heat, disturbed ground) with sliders, minerals with soils, and place names on the ground. Large layers show a spinner while they load. Opens on the hyperspectral stand mix from NASA's EMIT instrument on the space station. Every other layer loads only when you switch it on; its size is under its name. Public data only. This page: eldorado-preserve-twin.pages.dev
Hyperspectral (NASA EMIT)
EMIT is an imaging spectrometer on the International Space Station. It reads each 60 m square of ground in 285 colors of light, from blue to the far infrared. Living leaves, dry grass and litter, and bare soil each reflect their own pattern, so every square can be split into how much of each it holds; the stand mix and tree cover are made from that. Four clear passes were read: Jun 24, 2023 (its south half under cloud), Aug 20, 2023, Oct 3, 2024 and Jun 17, 2025.
One surface at a time. Lidar top surface: the ground raised by the 2014 lidar tree heights (2.3 MB, loaded when pressed). Google 3D tiles: Google's photographed 3D mesh of the ground and trees; while it is on, the image layers (maps and photos) do not show, but the lines, outlines, points and labels (water, wildlife, soils, names, trails, power lines) do. Modeled forest: one 3D tree at each 2014 lidar tree top, shaped by its height (4.6 MB, loaded when pressed).
Place names
Water
Where rain goes on the preserve, which storms cause trouble and where, and example basins. Lines, outlines, points and labels lie on the ground and on Google 3D; the depth maps and the animation are images, which show on the bare ground and the lidar surface only.
Wildlife
Corridors mapped by the state (NM CHAT), a corridor estimate made for this twin where no corridor is mapped inside the preserve, and places to feed pollinators and hoofed animals and to add water.
Seasons, change and heat (2022-2026)
Satellite readings month by month and season by season since 2022: how green the land is, how much water the canopy holds, how hot the ground gets in summer, and where the ground lost green or burned. The sliders load one picture at a time.
Minerals and soils together
Layers
Spectral readings and minerals (EMIT, every clear pass)
Field reports
No field reports yet. Each geotagged photo or note goes in field_reports.js (photos in the photos folder) and shows here as a pin.
Moving around Drag: pan. Right-drag or wheel: zoom. Ctrl-drag or middle-drag: tilt and turn. Click a pin or the outline for details. Layers switch on and off at the left; the slider sets how see-through each is.
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Aerial photo: USGS The National Map (public domain). Elevation: USGS 3DEP. Hyperspectral: NASA EMIT. Built with CesiumJS.