Publisher's Synopsis
Excerpt from Report on the Water-Power of the South Atlantic Watershed
In discussing the material thus collected I have, after dividing my district into the two divisions above named, prefaced the descriptions of the various rivers by a general description of the districts so far as their common characteristics are concerned. In giving information regarding particular powers I have endeavored to let each statement pass for what it is worth, and for no more; and where inaccuracies are liable to occur, I have repeatedly called attention to them.
The drainage areas given in the report were measured geometrically, there being no planimeter in possession of the office at the time they were determined. I have, however, checked them in so many ways that I believe them to be accurate measurements of the areas as taken from the maps. The latter are, in many cases, so inaccurate that slight errors in measurement are of no importance. I have' uniformly used Colton's largest maps of the separate states, which were the best I could find. In checking my measurements of the drainage-basins of the larger streams, by comparing them with those of Mr. Gannett, published in Census Bulletin No. 78, I have had the satisfaction of finding that the two agree, generally, within 1 or 2 per cent.
In making estimates of the amount of power available at the various sites I have endeavored to proceed according to the most approved methods in use in this country, and to pay proper attention to the most advanced and recent investigations in this direction. Having fully explained, in the introduction, the methods I have used, it is unnecessary for me to_ do more here than to call attention to this point. In view of the uncertainty attending all such estimates of power, in the absence of a series of gaugings of the streams in question, it may seem that I have gone too far in this direction; but it has appeared to me that it was essential to give some idea of the amount of power which could be fairly expected at each important site, in order that people might not be misled by too high estimates, which are the rule and not the exception.
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