This is a gallery of reservoirs from the November 2, 1982 landsat 4 image of central Maryland and northern Virginia. This gallery is not complete but gives a representative example.
All reservoirs are shown to the same scale, allowing them to be directly compared with each other.
Each image shows every pixel. The size and full image coordinates for the upper left corner are shown for each image. The full image coordinates range from 0 to 7167 in X and 0 to 5971 in Y where Y=0 is the top line in the full image.
Assuming square pixels, measurement on a map gives a pixel size of 28.5 meters, close to the stated 30 meter pixel size (this is from a careful measurement, but is not guaranteed for any significant purpose. Check this for yourself if you really need it). This is 35.09 pixels per km, and 56.47 pixels per mile.
(based on 28.5 meter pixels)
Prettyboy Reservoir, 314 x 166 at 2896,1
Loch Raven Reservoir, 346 x 313 at 3494,502
Liberty Reservoir, 349 x 473 at 2564,699
Piney Run Lake , 110 x 137 at 2449,1054
Rocky Gorge Reservoir, 371 x 122 at 2686,2040
Tridelphia Reservoir, 238 x 233 at 2407,1712
Lake Linganore , 187 x 121 at 1445,1165
Beaverdam Creek Reservoir, 87 x 160 at 1080,2825
Lake Manassas , 201 x 162 at 872,3789
Occoquan Reservoir, 489 x 233 at 1674,3807