374 



FORESTRY AND IRRIGATION 



August 



Most of the land is in private owner- 

 ship. The crops are principally al- 

 falfa, oats, wheat, and rye. 



The estimated cost of the project 

 without storage is $254,000. On a 

 basis of 16,000 acres this gives a cost 

 per acre of $15.12 ; adding $5 per acre 

 for maintenance and operation for ten 

 years, gives a cost of practically $20 

 per acre without storage. Sufficient 

 data is not at hand to warrant an esti- 

 mate on the cost of storage, which 

 must be known before it is possible to 

 decide upon the feasibility of the pro- 

 ject. 



The unregulated discharge of the 

 Madison River at the proposed point 

 of diversion would, in some years, be 

 sufficient to supply the canal through- 

 out the irrigating season, but in other 

 years there would be a shortage in 

 July, August, and September. On ac- 

 count of this shortage, and for the 



further reason that the entire low wa- 

 ter flow of Madison River is being 

 used for power development at points 

 lower down on the Missouri River, it 

 will be necessary to regulate by short- 

 age practically the entire discharge of 

 Madison River, and this would be pro- 

 vided for by the dam in Madison River 

 Canyon, which would create a reser- 

 voir with a capacity of 600,000 acre- 

 feet. 



The total estimated cost of the en- 

 tire Madison project is $14,413,000. 

 On a basis of 147,800 acres this gives 

 a cost per acre of $97.50. Allowing 

 $5 per acre for ten years maintenance 

 and operation brings the cost up to 

 about $102.50 per acre. The long 

 canal line with its expensive river 

 crossings, tunnels and other structures 

 necessitated by the topogrphy of the 

 country, are responsible for the high 

 cost of construction. 



CALIFORNIA GROUND WATERS 



Important Publications on Southern 

 California by U. S. Geological Survey 



HT HE RESULTS of an extremely 

 A practical and purposeful investi- 

 gation of the ground water resources 

 of the coastal plain region of southern 

 California have recently been pub- 

 lished by the United States Geologi- 

 cal Survey. These reports cover the 

 region along the coast from Santa 

 Monica to Aliso Creek, and extend in- 

 land over the coastal plain to the foot- 

 hills from San Pasqual on the north- 

 west, through Santa Anita, Glendora, 

 Pomona, and San Bernardino, to San 

 Jacinto on the southeast. 



Throughout this whole area the peo- 

 ple are dependent mainly upon ground 

 water for their water supply, and 

 much of the prosperity that has been 

 realized in this country has resulted 

 from irrigation by ground waters. 

 Therefore the future is largely depend- 

 ent upon the availability of these 

 waters and their permanence. 



The reports mentioned deal with 

 these questions in a practical way and 

 show where ground waters may be 

 obtained, the depth at which they oc- 

 cur, and what may ultimately be ex- 

 pected if the present improvident use 

 of the water is continued. In order 

 that the reports may be distributed in 

 the most heloful manner the region 

 has been divided into the western, cen- 

 tral, and eastern sections, and each has 

 been treated in a separate bulletin. 



The western section includes the 

 Redondo and southern half of the 

 Santa Monica quadrangles. This re- 

 gion may be geographically defined 

 as that part of the country lying west- 

 ward from a line running north from 

 San Pedro Bay through Los Angeles 

 and Glendive to La Crescento. The 

 central section includes the Downey 

 and Las Bolas quadrangles, and may 

 be geographically defined as land lying 



