1. Oswego Harbor, New York; scale 1:8,000. 2. Duluth-Superior Harbor, Minnesota and Wisconsin; scale 1:18,000. The transtey fer for the fourth edition in colors was made from these copperplates, as noted above under the head of copperplates revised and transferred to stone i printing in colors, No. 13. ber 3. Agate and Burlington bays, Minnesota; scale 1:6,000. 4. Manitou Passage, Lake Michigan; scale 1:30,000. 5. Little Sodus Bay, New York; scale 1:8,000. 6. Maumee Bay and Maumee River, Ohio; scale 1:25,000. 7. St. Joseph Channel and western end of North Channel; scale 1:40,000. 9. Coast chart No. 7, Lake Huron; scale 1: 120,000. 10. Great Sodus Bay, New York; scale 1:10,000. 11. Frankfort Harbor, Michigan; scale 1:5,000. 12. Marquette and Presque Isle harbors, Michigan; scale 1:15,000. 13. Fairport Harbor, Ohio; scale 1:8,000. 14. Harbor at Michigan City, Ind.; scale 1:5,000. 15. Conneaut Harbor, Ohio; scale 1:5,000. 16. Ashtabula Harbor, Ohio; scale 1:5,000. 17. Muskegon Harbor, Michigan; scale 1:15,000. 18. Manistique Harbor, Michigan; scale 1:5,000. 19. Sturgeon Bay Canal and Harbor of Refuge; scale 1:25,000. The methods of work inaugurated four years ago have proven entirely successful and satisfactory and will be continued, with su improvements as experience may suggest. The reduction, preparation, and reproduction of charts has tinued, as heretofore, under the immediate direction and supervision of Assistant Engineer Edward Molitor, and to him is due great creat for the very large amount of satisfactory work turned out during the year. Lake Huron. In addition to the foregoing, Assistant Engineer Thomas Russell has taken a number of sets of magnetic observations covering generally the south shore of Lake Superior and the east and west shores of Lake Michigan. Surveys.-There are six parties at present in the field, as follows: That under Assistant Engineer F. C. Shenehon is making g progress on the careful reexamination of the west end of Lake Er which was commenced two years ago. Bal Assistant Engineer F. G. Ray's party is continuing its work of the last two seasons, the reexamination of Green Bay and the passage into it from Lake Michigan, and is making its customary excellent Store record. The party of Junior Engineer W. J. Graves is continuing its work May of the last two seasons in the northeastern portion of Lake Michigan x This party in June reported an important uncharted shoal lying north of the sailing course between Simmons reef and Lansing shoal t Junior Engineer A. D. Hollingsworth is engaged upon local harber surveys for the purpose of extending the lake survey system of charts th to include all harbors upon the Great Lakes, many of which are increa ing so rapidly in importance that it is difficult to keep pace with their development. Junior Engineer H. F. Johnson's party is engaged in extending primary triangulation southward along the western shore of Lake IN Huron. The sixth and last party, under Junior Engineer M. S. MacDiarmi is engaged in a resurvey of Les Cheneaux Islands in the north end of 19 1. Oswego Harbor, New York; scale 1:8,000. 2. Duluth-Superior Harbor, Minnesota and Wisconsin; sale under the head of copperplates revised and tra 3. Agate and Burlington bays, Minnesota; scale 1:6,000. 5. Little Sodus Bay, New York; scale 1:8,000. 6. Maumee Bay and Maumee River, Ohio; scale 1:25,000). 7. St. Joseph Channel and western end of North Channel: sea- ! 17. Muskegon Harbor, Michigan; scale 1:15,000. 18. Manistique Harbor, Michigan; scale 1:5,000. 9. Coast chart No. 7, Lake Huron; scale 1:120,000. Bulletins.-The bulletins of the survey of Northern and Northwestern Lakes contain important data and information supplementary to the charts, but of too voluminous a character to be incorporated thereon, and they are accordingly issued free in connection with the charts. Bulletin 12, of 1902, and those preceding it, were printed in Wash 10. Great Sodus Bay, New York; scale 1:10,000. 11. Frankfort Harbor, Michigan; scale 1:5,000. 12. Marquette and Presque Isle harbors, Michigan; scale 1:15, ington, but on July 10, 1902, the entire work of printing and issuing 14. Harbor at Michigan City, Ind.; scale 1:5,000. bulletins and supplements thereto was turned over to this Office. The 15. Conneaut Harbor, Ohio; scale 1:5,000. 16. Ashtabula Harbor, Ohio; scale 1:5,000. The numbers published during the year are as follows: 19. Sturgeon Bay Canal and Harbor of Refuge; scale 1:25,000. 20. Charlotte Harbor, New York; scale 1:5,000. In the report of Principal Assistant Engineer E. E. Haskell, immediately following, will be found a more complete summary of all matapters relating to surveys, they having been under his immediate direction. There is herewith a chart (Pl. 2) showing the completed triangulation of the Detroit River, adjusted to standard datum. It should be published to perfect the record of adjusted triangulation given in report for 1902. • progress on the careful reexamination of the west end which was commenced two years ago. of Assistant Engineer F. G. Ray's party is continuing its into it from Lake Michigan, and is making its custom last two seasons, the reexamination of Green Bay and th The methods of work inaugurated four years ago entirely successful and satisfactory and will be continued improvements as experience may suggest. The reduction, preparation, and reproduction of cha tinued, as heretofore, under the immediate direction and.. Supplements Nos. 3, 4, 5, 6, 7, and 8 to Bulletin 14 covered all reported for the very large amount of satisfactory work turned odhanges of interest to navigators arising between July 1 and December 31, 1904. In pursuance of the policy previously inaugurated of insert of Assistant Engineer Edward Molitor, and to him is due. year. Surveys.-There are six parties at present in the fielding in the bulletins and supplements, as occasion arises, small maps the south shore of Lake Superior and the east and west shores Michigan. Supplement No. 3 to Bulletin 14, July 15, 1904. Supplement No. 2, to Bulletin 15, June 22, 1905. bowing locations of har bors not otherwise charted, etc., Supplement No. 8 contained an inset record. of the last two seasons in the northeastern portion of a The party of Junior Engineer W. J. Graves is continu This party in June reported an important uncharted sha north of the sailing course between Simmons reef and La Bulletin No. 15, thoroughly revised and giving the latest information obtainable as to channels, harbors, and matters of navigable interest over the entire Lakes and connecting waters, was mailed out early in May, 1905. The bulletin was 372 pages in size, and in addition to its extensive descriptive matter, contained inset maps of magnetic variations in west end of Lake Superior; Little Rapids, St. Marys River, showing available channel and aids to navigation at opening of season, 1905; vicinity of Sailors Encampment, St. Marys River, show Junior Engineer A. D. Hollingsworth is engaged uponing channel and aids to navigation at opening of season, 1905; head of surveys for the purpose of extending the lake surveys Green Bay, including Fox River below Depere, Wis.; Holdridge shoal, to include all harbors upon the Great Lakes, many of whit Lake Huron (as included in Supplement No. 8, mentioned above); ing so rapidly in importance that it is difficult to keep pace Presque Isle Harbor, including North Bay, Lake Huron; and lower F Detroit River, showing channel and aids to navigation at opening of development. Junior Engineer H. F. Johnson's party is engaged season, 1905. The catalogue of charts, with index chart of Northern primary triangulation southward along the western short and Northwestern Lakes, was revised to date and also included. SupThe sixth and last party, under Junior Engineer M. SMA Plements Nos. 1 and 2 to this bulletin, issued prior to the close of the Huron. fiscal year, covered all changes received to June 22. is engaged in a resurvey of Les Cheneaux Islands in the not Lake Huron. The present circulation of these publications numbers over 2,100 copies, an increase of more than 200 over the same time last year, extending to a large proportion of the most important interests taken a number of sets of magnetic observations cover engaged in the navigation of the Lakes. In addition to this wide dis In addition to the foregoing, Assistant Engineer Thomas Re tribution there is an increasing demand for the books, arising not only from the navigators themselves, but from various outside commercial and industrial concerns and individuals whose interests are related in some measure with lake improvement. Water levels. The stages of water in Lakes Superior, Michigan, Huron, Erie, and Ontario in the following table are from gauge records at the places named, and are referred to mean tide at New York, adjusted levels of 1903. Station. Marquette Charlotte allin Monthly means of water level for stations named, expressed in feet above mean tide at Ner plane York. [Adjusted levels of 1903. 1904. July. Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Apr. May, Ju 602.86 602.95 603.08 603. 26 603. 14 602.74 602.47 602.13 602.04 602.25 602,49 247.78 247.56 247. 17 246.84 246.33 245. 75 245, 60 245. 28 245.06 245. 80 246. 10 246.14 The elevations of "high water of 1838" for each lake, so often referred to, are as follows (levels of 1903): Lake Superior.. Lake Erie. Lake Ontario. 1905. Stage. 602.29 St. Marys. 575. 76 572. 62 246. 18 Feet. 605.32 584.69 584.69 575.11 248.98 Corresponding mean discharge in cubic feet per second. St. Clair River. able Sollars There is also here with a sheet showing the monthly mean water an levels of all the Great Lakes from January, 1860, to June, 1905, both inclusive. (See Pl. 1.) Discharge 77.000 206,400 Fo less t A 209,900 @ 215,200 ests o Surv comp Th Investigation of lake levels.-The principal field work of the year was the collection of lake temperatures for the determination of evap oration from the lake surfaces and the winter discharge measurements of the St. Marys River at Sault Ste. Marie. In office work a large amount of rainfall data was collected and tabulated. Tune 30 The following table gives a summary of discharges, as so far deterine 30 mined, corresponding to the mean elevations of the various lakes for the last forty-five years: a Includes 1,200 cubic feet passing out through Erie Canal and 1,100 cubic feet through Welland Canal. depth hut P accur and 2 shoul refer of offi The and m possib 30,19 tance I th less than $10,000 should be provided for next year. ! from the navigators themselves, but from various outsi and industrial concerns and individuals whose interes some measure with lake improvement. A matter of greater immediate importance to the commercial interWater levels.-The stages of water in Lakes Superests of the Great Lakes is the bringing up to date of the existing Lake Huron, Erie, and Ontario in the following table are from Survey charts, their issue in colors, and the extension of the series to at the places named, and are referred to mean tides completion on a comprehensive plan. adjusted levels of 1903. The original charts were prepared with reference to a navigation calling for a draft of only 12 feet. The soundings were referred to Monthly means of water level for stations named, expressed in fedt de planes representing mean or average stages of water, and general York. depths exceeding 18 feet below such planes were not closely developed; Station. July. Aug. Sept. Oct. Nov. Dec. Jan. Feb. Mar. Marquette. 1904. The elevations of "high water of 1838" for each lab stances of the case require. referred to, are as follows (levels of 1903): Lake Superior.. Lake Michigan. Lake Huron Lake Erie. L There is also herewith a sheet showing the monthly levels of all the Great Lakes from January, 1860, to June. inclusive. (See Pl. 1.) Investigation of lake levels.-The principal field work day 1, 1904, balance unexpended was the collection of lake temperatures for the determinating March 9, 1905, amount allotted from sundry civil act approved March 3, 1905.. of the St. Marys River at Sault Ste. Marie. In office was amount of rainfall data was collected and tabulated. June 30, 1905, amount withdrawn during fiscal year The following table gives a summary of discharges, as so June 30, 1905, amount expended during fiscal year. mined, corresponding to the meat elevations of the various the last forty-five years: Superior. Huron.. St. Clair.. Erie. Ontario.. Mean elevation for 45 years (1860-1904) above mean tide at New York City. Lake. I therefore recommend and, so far as permissible, urge that the appropriation for the year 1907 be made to cover the two amounts above indicated, as follows: For survey of Northern and Northwestern Lakes, including all necessary expenses for preparing, correcting, extending, printing, and issuing charts and bulletins, and of investigating lake levels with a view to their regulation, to be immediately available and to remain available until expended, one hundred and twenty-five thousand dollars. Money statement. a Includes 1,200 cubic feet passing out through Erie Canal and 1,100 cubic feet t Canal. $198, 698. 24 95,000.00 293, 698.24 $3.79 116, 939.06 July 1, 1905, balance unexpended July 1, 1905, balance available July 1, 1905, amount covered by uncompleted contracts......... Amount that can be profitably expended in fiscal year ending June 30, 116, 942.85 176, 755. 39 10, 576. 44 166, 178.95 381.77 125,000.00 Dates and amounts of appropriations for surveys of Northern and Northwestern Lakes. $15,000 20,000 March 2, 1868. 20,000 March 3, 1841 March 18, 1842 March 1, 1843.. June 17, 1844. March 3, 1845 August 8, 1846. August 12, 1848. March 3, 1849. September 28, 1850 20,000 March 3, 1871 June 10, 1872. March 3, 1851. August 30, 1852. March 3, 1853. August 5, 1854. March 3, 1855. August 30, 1856. March 3, 1857. June 12, 1858.. March 3, 1859. June 21, 1860. March 2, 1861. July 5, 1862.. February 9, 1863 July 2, 1864.. February 28, 1865 June 12, 1866.. March 2, 1867. 25,000 25,000 10,000 25,000 25,000 June 6, 1900... June 28, 1902. 50,000 50,000 50,000 50,000 50,000 75,000 75,000 75,000 75,000 105,000 125,000 77,500 $3,000 3,000 2,000 2,000 2,000 2,939, 879 Printing and issue of charts for use of navigators and electrotyping copperplates for chart printing. 2,000 2,000 2,000 2,000 March 3, 1873. June 23, 1874. July 31, 1876 (not including June 20, 1878 (not including March 3, 1879. June 16, 1880. August 7, 1882. Total 25,000 25,000 Surveys and additions to and correcting engraved plates. $5,000 June 11, 1896. July 1, 1898. 5,000 25,000 Total... $77,500 75,000 100,000 100,000 175,000 175,000 175,000 175,000 150,000 84,000 $75,000 April 28, 1904 March 3, 1905 . 150,000 150,000 Total.. Surveys, including investigations of lake levels, correcting, printing, and issuing charts and bulletins. $25,000 25,000 25,000 25,000 205,000 $150,000 100,000 725,000 |