Mean monthly water-level below plane of reference for Lakes Michigan and Huron. [Place of observation: Milwaukee.] Year. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec. Yearly mean. 1860..2.18 2.00 1.97 1.84 1.72 1.60 1.56 1.75 1.95 2.26 2.59 2.75 2.01 1861 2.86 2.28 1.86 1.70 1.57 1.33 1. 64 1.76 1.99 2.16 2.03 1862. 2.36 2.51 1.80 1.67 1.77 1.78 1 85 1.96 2.35 2.49 2.07 1863.. 2.56 2.51 2.52 2.52 2.31 2.22 2.27 2.40 2.58 2.67 3.11 2.77 2.54 1864. 3.00 3. 18 2.78 2.96 3.23 3. 62 3.79 3.92 3.16 1865 4. 13 4.04 3.87 3.38 3.22 3.18 2.75 2.73 3.65 3.96 3.40 1866 4.22 4.46 4.41 3.96 3.78 3.49 3.23 3.17 3.32 3.43 3.52 1867 3.80 3.75 3.57 3.28 3.06 2.75 2.60 3.27 3.73 4.08 3.29 1868 4.24 4.28 3.60 3.70 3.42 3. 21 3.18 3.52 4. C6 4.34 3.78 1869 4.44 4.37 4.63 4.26 3.93 3.40 3.02 2.76 2.87 3.23 3.35 3.63 3.66 1870 3.57 2.76 2.42 2.28 2.17 2.26 2. 12 2.52 2.92 3.27 2.75 1871.. 3.12 3. 20 2.60 2.40 2.05 2.01 1.98 3.57 3.62 4.21 2.82 1872.. 4.34 4.34 4.56 4.31 4.06 3.69 3.66 3.68 4.16 4.82 4.10 1873.. 4.82 4.78 4.47 3.90 3.34 2.71 2.84 2.90 3.13 1874.. 3. 21 2.92 2.77 2.87 2.89 2.52 2.59 2.58 2.83 3.18 3.38 3.72 2.96 1875.. 3.92 3.99 3.93 3.57 3.01 22.77 2.80 2.85 3.06 1876.. 2.77 2.57 1.95 1.54 1.20 1.27 1.32 1.90 1.80 2.27 2.08 1877.. 2.41 2.40 2.40 2.02 2.13 2.06 2.09 2.21 2.42 2.41 2.53 2.59 2.31 1878 2.71 2.78 2.62 2. 60 2.30 2.16 2.15 2.47 2.67 2.78 2.91 3.23 2.62 1879 3.54 3.53 3.49 3.50 3.37 3.30 3.21 3.40 3.52 3.74 3.96 3.93 3.54 1880 3.89 3.77 3.43 2.89 2.67 2.64 2.94 3.28 3.60 1881 3.76 3.55 3.26 2.35 2.84 2.61 2 64 2.64 2.87 2.54 2.71 2 81 2.88 1882. 3.03 3.04 2.67 2.54 2.44 2.17 2. 109 1.919 2.043 2.448 2.662 2.993 2.505 1883. 3.250 3.210 3.122 2.910 2.427 2.065 1.469 1.504 1.692 1.905 2.363 2.439 2.363 1884 2.655 2.541 2. 293 2.113 1.898 1.743 1.899 2.042 2.648 2.679 2.258 1885 2.672 2.444 1.927 1.723 1.633 1.424 1.559 1.703 1.999 2.288 2.011 1886. 2.0.37 2.014 1.757 1.490 1.230 1.159 1.349 1.581 1.822 1.915 2.261 2.589 1.771 1887. 2.672 2.304 2.143 2.187 1.993 1.853 1.919 2.060 2.404 2.855 3. 181 3.307 2.407 Mean* 3. 311 3.267 3.089 2.878 2.624 2.389 65,018 2. 322 * 1860-1887 inclusive. 2.91 2.5473 + Excluding observations from 1864-72, inclusive to compare with table for Lake Huron. NOTE.-Omitting from the Milwaukee record those years not appearing in the record for Lake Huron the following results: At Milwaukee (Lake Michigan), sum of monthly totals, 580.813; mean water-level below plane of reference, 2.5474+. Lake Huron, sum of monthly totals, 579.65; mean water-level below plane of reference, 2.5423 +. Mean monthly water-level below plane of reference for Lake Erie. 66. 240 71. 664 77.934 85.034 39.648 40. 280 43. 944 47.344 52. 234 2.364 2.559 2.783 3.037 2.09 2.12 2.31 2.49 55. 205 580.813 2.75 Mean monthly water-level below plane of reference for Lake Ontario. ISSUE OF PUBLISHED CHARTS OF THE NORTHERN AND NORTHWESTERN LAKES. ANNUAL REPORT OF LIEUTENANT-COLONEL 0. M. POE, CORPS OF ENGINEERS, BVT. BRIG. GEN., U. S. A., FOR THE FISCAL YEAR ENDING JUNE 30, 1888. UNITED STATES ENGINEER Office, Detroit, Mich., July 3, 1888. SIR: I have the honor to transmit herewith, in duplicate, my annual report on the "issue of the published charts of the northern and northwestern lakes" for the fiscal year ending June 30, 1888. Very respectfully, your obedient servant, The CHIEF OF ENGINEERS, U. S. A. O. M. POE, ISSUE OF THE PUBLISHED CHARTS OF THE NORTHERN AND NORTHWESTERN LAKES. The issue of the charts to registered vessels has continued during the year in accordance with regulations; also their sale at a fixed price (to cover cost of paper and printing) to all who desired to purchase. The following table shows the extent of this business: Issue of charts of the northern and northwestern lakes during the fiscal year ending June On hand July 1, 1887.. Issued to vessels, etc Sold at 30 cents each.. On hand July 1, 1888. 50, 1888. The sum of $458.10 was turned into the Treasury from sale of 1,527 charts, at 30 cents each. Total number of charts issued to July 1, 1887 Total issue to July 1, 1883..... 148,831 8,897 157,728 Owing to changes in channels, the discovery of previously unknown dangers, and the extension of works of river and harbor improvement, many of the charts now require additions and corrections, in order to render them of the greatest service. In some cases limited surveys will be required to obtain the requisite data. Considering the extensive use made of the charts, and their recognized value to the lake marine, the sum of $10,000 should be annually appropriated for the purpose indicated, and I respectfully repeat my recommendation of last year in this respect. The cost of printing and issuing charts is now so small that it can not be further reduced. I therefore have the honor to submit the following: Estimate for the fiscal year ending June 30, 1890. For minor surveys and other expenses connected with correcting and extending the charts of the northern and northwestern lakes.. For printing and issuing charts for the use of navigators, and electrotyping copper-plates for chart printing $3,000 10,000 July 1, 1888, amount available, appropriation not yet made.. None. $3,000.00 10,000.00 13,000.00 |