52 EEPORT OF OFFICE OF EXPERIMENT STATIONS. 



Utah, "uas made to map the areas of land injured by seepage and 

 alkali in this district. Further assistance has been given in the con- 

 struction of extensions to the drains previously installed on the Geary 

 tract at Huntington, and the Washington field at St. George, Utah. 

 The extensions on the Geary tract have been comjDleted, but those at 

 St. George have been delayed by unfavorable weather and by the 

 irrigation of adjacent higher lands. Many other examinations have 

 been made in this State, including a survey and the design of a drain- 

 age sj-stem for the farm of G. D. Williams, near Syracuse. The 

 drains on the Jensen tract, near Murray, have been installed under 

 the supervision of Mr. Hart. 



In Colorado, examinations and surveys were made of various tracts 

 in the valleys of the Grand, Gunnison, and Uncompahgre Rivers, and 

 assistance was given in the installation of drains. A survey was 

 made of 3,600 acres near Parma, in the San Luis Valley, and plans 

 for the drainage of the tract were prepared. Plans were also pre- 

 pared for the Arnell tract of 3,000 acres in the same valley, and 

 assistance was given in the organization of the La Jara and Hooper 

 drainage districts. 



C. G. Elliott visited the Yakima Indian Reservation, Wash., to 

 confer with the chief engineer of the Indian Bureau concerning the 

 plans for the drainage of the lands injured by seepage and alkali on 

 that reservation. 



COLLECTION OF TECHNICAL DATA. 



A series of experiments was made in Florida by H. xV. KijDp and 

 F. F. Shafer to determine the maximum and the optimum moisture 

 contents of muck soils and the amount of water that should be re- 

 moved from saturated muck to bring it into good condition for crop 

 growth. From five tracts near Kissimmee, one tract near Miami, and 

 seven near Fort Lauderdale, a total of 121 samples were taken, both 

 of ]'aw and of cultivated soils. Five weeks were required for testing 

 the samples. Exj^erimenls to determine the moisture content of 

 saturated muck soils of the wet prairie lands of southern Louisiana, 

 and the amount of water in the soils when they are in gaod condition 

 for cultivation, were made by C. W. Okey on tracts near Lockport 

 and Raceland. These investigations furnish data of much value in 

 determining how thoroughly such soils should be drained, also in 

 estimating the storage capacity of the ground and its effect upon the 

 maximum rate of run-off to be used in planning drainage systems. 



The investigations of run-off in southern Louisiana, begun in the 

 spring of 1909, were continued until the end of May, 1910, by A. M. 

 Shaw and C. W. Okey. Tests of pumping plants and some gagings 

 of flow in ditches were made; records were obtained of the periods 



