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Lake · Maryland

Triadelphia Reservoir

120 m394 ft
Tonight
36°FFair · Wind 0–5 mph NE

Triadelphia Reservoir is a lake at 120 m above sea level in Maryland, United States.

All facts
Surface elevation
120 m
Open the 3D view
3D map

Triadelphia 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

Surface
Vertical scale
Topographic map

Triadelphia 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.

Index contours every 25 mShowing west → east through the centre

Triadelphia Reservoir elevation profile

West → east through the centre

Hover the profile to read elevation and distance.Tap or drag along the profile to read elevation and distance.
Weather

Triadelphia Reservoir weather

Tonight · Fair · 36°F (2°C) · Wind 0–5 mph NE

Triadelphia Reservoir forecast for about 121 m.

  • Tonight36°–0–5 mph NE
  • Sat35°62°–0–5 mph E
  • Sun36°66°–1 mph SE
  • Mon47°69°–1–5 mph W
  • Tue45°67°–7 mph N
  • Wed48°64°1%2–6 mph E
  • Thu49°68°3%1–6 mph SE

Forecast data: NOAA National Weather Service, public domain, model run Oct 23, 23:53 UTC.

Camping & parking

Camping & parking near Triadelphia Reservoir

Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around Triadelphia Reservoir, nearest first, by straight-line distance. Check access, fees and permits locally.

All mapped places 3
PlaceDistance
Parking1.4 km SSW
Parking1.5 km WSW
Parking1.6 km SSW
Slope

Slope

Share of the 4 × 4 km view by steepness, from the 10 m model.

Mostly gentle: 97% of the view is under 15°.

Gentle, 0–15°
96.6%
Moderate, 15–30°
3.3%
Steep, 30–45°
0.0%
Cliffs, 45° and over
0.0%
Steeper than 30°
0.0% of the 16 km² view
Relief in view
90 m low point 92 m
Land cover

Land cover

ESA WorldCover 10 m classification of the same area.

Trees 69.2%Grassland 19.3%Water 10.7%Built-up 0.7%

Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.

Wildlife

Wildlife seen nearby

Sightings of the most-seen species on iNaturalist (research grade) within 2 km; 1,058 species recorded in all.

Sightings per species 6
  • Eastern Bluebird168
  • Eastern Gray Squirrel85
  • American Goldfinch60
  • Eastern Tiger Swallowtail46
  • Ruby-throated Hummingbird44
  • Downy Woodpecker42
Where it sits

Where Triadelphia Reservoir sits

Region
Maryland9United States932North America1,313
Nearby

Nearby places

More 1
Downloads

Triadelphia 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
</>Embed this mapPaste this into your site to show the interactive 3D terrain, with a credit link back here.<iframe src="https://topolu.com/embed/triadelphia-reservoir" width="100%" height="480" style="border:0" loading="lazy" allowfullscreen title="3D terrain of Triadelphia Reservoir"></iframe> <p><a href="https://topolu.com/triadelphia-reservoir" rel="nofollow">Topolu</a></p>

Free to use with credit: see the data sources

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)
Sources
Wikidata · GeoNames · Wikipedia