REPORT OF BOARD OF CONSULTING ENGINEERS, PANAMA CANAL. miles. The maximum combined fall of these two locks is 62 feet. From Pedro Miguel locks a level of 1.33 miles extends to Miraflores lock, which has a maximum fall of 38 feet to mean low tide in Panama Harbor. For a distance of 4.12 miles beyond this lock the canal extends, through the low swampy country in which the Rio Grande flows, to a point known as La Boca, on the TRAN8. AM. SOC. CIV. ENORS. VOL. LII, No. 979. WARD ON THE GATUN DAM. ~~eS 2-' K~ 4% Ale eesseps., K \ GATUN DAM. PANAMA CANAL Contours are in Meters 20GO FT. SCALE SECTiON ON LINE OF GATUN DAM -PANAMA CANAL. 0 500 1000 1500 2000 FT. SCALE 1r 0 h .0. ~Canal Eev. -q-- ~ >,2~T~:~- ___ __ -Ft. edge of Panama Bay. A dredged channel extends from this point 4.41 miles to the 6-fathom line in Panama Bay. Allowing 0.90 mile for the various locks, the total length of canal is 49.09 miles. As to the suggested dam at Gatun, the New Panama Canal Company has made a contour map of the region where the dam would probably be located, if at all. This map is reproduced, and from it the writer has constructed a section on the proposed center line of the dam. This ..6 A7rO. 280