McMillan Reservoir
- Area
- 0.17 km²
- Tonight
- 42°FFair · Wind 3 mph NE
McMillan Reservoir is a lake at 43 m above sea level in District of Columbia, United States, 0.17 km² in area and 0.8 km long.
All facts
- Surface elevation
- 43 m
- Length
- 0.8 km
- Shoreline
- 2.1 km
McMillan Reservoir in numbers
Shoreline from OpenStreetMap.
- Shoreline
- 2.1 km≈30 min to walk around
McMillan Reservoir 3D map
Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 4 × 4 km
McMillan Reservoir terrain and contours
5 m contours from the USGS 3DEP 10 m terrain model. Click two points on the map to draw your own cross-section.Tap two points on the map to draw your own cross-section.
McMillan Reservoir elevation profile
West → east through the centre
McMillan Reservoir weather
Tonight · Fair · 42°F (6°C) · Wind 3 mph NE
McMillan Reservoir forecast for about 52 m.
- Tonight42°–3 mph NE
- Sat41°64°–2–6 mph E
- Sun41°67°–2 mph E
- Mon49°69°–5 mph W
- Tue48°69°–7 mph N
- Wed50°65°1%6 mph E
- Thu52°70°3%2–6 mph S
Forecast data: NOAA National Weather Service, public domain, model run Oct 23, 23:53 UTC.
Camping & parking near McMillan Reservoir
Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around McMillan Reservoir, nearest first, by straight-line distance. Check access, fees and permits locally.
Nearest parking
0.2 km W
Nearest trailhead
White Horse Trailhead
All mapped places 5
| Place | Distance |
|---|---|
| Parking | 0.2 km W |
| Parking | 0.3 km SW |
| Parking | 0.3 km ESE |
| White Horse TrailheadTrailhead | 4.7 km NW |
| Battery Kemble TrailheadTrailhead | 7.1 km W |
Slope
Share of the 4 × 4 km view by steepness, from the 10 m model.
Mostly gentle: 99% of the view is under 15°.
- Steeper than 30°
- 0.0% of the 16 km² view
- Relief in view
- 88 m low point 12 m
Land cover
ESA WorldCover 10 m classification of the same area.
Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.
Wildlife seen nearby
Sightings of the most-seen species on iNaturalist (research grade) within 2 km; 1,247 species recorded in all.
Sightings per species 6
- Eastern Gray Squirrel281
- House Sparrow168
- Ligurian Leafhopper142
- Tree-of-heaven134
- Spotted Lanternfly130
- European Starling129
Where McMillan Reservoir sits
- Region
- United States932North America1,313
Nearby places
McMillan Reservoir downloads: topographic map, heightmap, STL 3D model and DEM
Free files made in your browser from this page's terrain data. No sign-up; credit the sources below.
Print & wall
3D printing & 3D apps
GIS & GPS
Free to use with credit: see the data sources
Data sources
- Terrain
- U.S. Geological Survey, 3D Elevation Program (public domain)
- Imagery
- Contains modified Copernicus Sentinel data 2026 (scene 2026-07-23)
- Land cover
- © ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium
- Facts
- Wikidata (CC0)
- Camping & parking, Geometry
- © OpenStreetMap contributors (ODbL)
- Wildlife
- iNaturalist community observations, counts only
- Forecast
- Weather forecast from NOAA National Weather Service (public domain)