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Topographic maps are also commonly called contour maps or topo maps. In the United States, where the primary national series is organized by a strict 7.5-minute grid, they are often called or quads or quadrangles. Topographic maps conventionally show topography, or land contours, by means of contour lines.
Find the point of interest along a stream on the map. This is the "watershed outlet" or "pour point." Imagine or draw surface water flow lines that point downhill perpendicular to the topographic contours (this is the steepest direction). Mark the location of topographical high points (peaks) around the stream.
Kentucky Lake has a flood storage capacity of 4,008,000 acre⋅ft (4.944 km 3), more than 2.5 times the next largest lake in the TVA system. It provides a source for hydro-electric power. Also, as one of the lakes alluded to by the name of Land Between The Lakes National Recreation Area , it is a recreational destination of western Kentucky and ...
Lake Bonneville was the largest Late Pleistocene paleolake in the Great Basin of western North America. It was a pluvial lake that formed in response to an increase in precipitation and a decrease in evaporation as a result of cooler temperatures.
A topographic map of Stowe, Vermont with contour lines This false-color satellite image illustrates topography of the urban core of the New York metropolitan area, with Manhattan at its center. Topography is the study of the forms and features of land surfaces .
Lake Rabun is a twisty 835-acre (3.4 km 2) reservoir with 25 miles (40 km) ... The reservoir elevation is listed as 1,683 feet on topographic maps, but Georgia Power ...
The nearest volcano to the lake, to its southeast, is the Ardoukôka, about 3 km (1.9 mi) away from the shores of the lake, which is marked on topographic map with (-) 80 m (260 ft) contour line. The southern part of the lake has sand patches whose width varies from about 1–6 km (0.62–3.73 mi).
The United States Geological Survey (USGS) topographical survey maps included contour representation of relief, and so maps that show relief, especially with exact representation of elevation, came to be called topographic maps (or "topo" maps) in the United States, and the usage has spread internationally.