Water Survey Series Volume 9; V. 13-14

Water Survey Series Volume 9; V. 13-14

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ...waters reduces the alkalinity of the river water from 460 to 20. The large increases in residue, hardness, sulfate, and magnesium are also caused mainly by the mine water. The marked increase in the number of bacteria can be laid entirely to the sewage. Following the sudden rise in bacteria there is a marked reduction at Station 3. This is because of the germicidal action of the iron sulfate of the waste mine water. Increases in chloride, the nitrogens, and oxygen consumed are probably due to both sewage and mine water. The marked reduction in dissolved oxygen is due both to the presence of sewage and to the oxidation of iron in the mine water. The effects on the river produced by such natural influences as flow, sedimentation, aeration, and ice are shown by the analyses at the various stations between Streator and Portland. It will be noted that the results of analyses at the point nearest Illinois River (Station 9) are apparently inconsistent. Nearly every determination shows a decidedly different water from that at previous stations. The only explanation of the results seems to be that the sample was in reality Illinois River water. Back water from Illinois River might reach that point because the lower end of Vermilion River broadens out somewhat there and becomes considerably deeper. The results of all other analyses of Vermilion River appear quite consistent. The turbidity and iron decrease somewhat but, except between Stations 2 and 3, the reduction is only gradual until Station 8 is reached, where a marked drop occurs. The river as far downstream as the Marquette mill at Portland was coated almost completely with ice and lack of air very likely retarded materially the oxidation and deposition of the iron. That this must be true is borne...show more

Product details

  • Paperback | 212 pages
  • 189 x 246 x 11mm | 386g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123654305X
  • 9781236543059