Mr. RABAUT. The next project is Socorro, N. Mex., $400,000.
Insert pages 121 through 126 of the justifications.

(The pages referred to follow :)

Total Estimated Project Cost

$4,030,000

Appropriations Request for FY 1962 Balance to Complete after FY 1962

PHYSICAL DATA

$146,000(1)

157.000

303,000

400,000

$2,997,000

(1) Includes $35,000 for Preauthorization Studies.

JUSTIFICATION: Practically the entire city of Socorro and its environs are subject to flooding from the tributary arroyos which enter the Rio Grande from the west at and near the city. The tributary arroyos flow only at infrequent intervals, but at those times flooding almost always occurs. With the exception of Arroyo de la Matanza, none has a direct outlet to the Rio Grande and therefore the irrigation drainage system must be depended upon for conveyance of runoff through the valley. Since the drains were designed primarily to accommodate subsurface inflow, they become overloaded when there is appreciable surface runoff, and the excess water breaks out at various points, spreads over the terrain, and ponds in low areas or behind obstructions until capacity in the drains becomes adequate for its removal.

When there is a flood on any one of the arroyos, it is usually accompanied by a flood on one or more of the other arroyos. The area subject to flooding is a composite of the areas which would be inundated by floods of standard project magnitude from the three principal flood sources: Park City Arroyo (including Socorro Canyon), Blue Canyon, and Nogal Canyon. It comprises about 7 square miles in and adjacent to the city of Socorro. Improvements in the flood plain include residences, business and industrial establishments, public buildings, schools, and farmsteads. Transportation facilities in the flood plain are U. S. Highways 60 and 85, the A. T. & S. F. Ry., city streets, and county roads. The city sewage disposal plant is also located in the area, and is subject to damage. The estimated damages that would be caused in the area to be protected by the project from an occurrence of the standard project storm would range from about $1,500,000 with the storm centered over Nogal Canyon to about $3,000,000 with the storm centered over Socorro Canyon. The project would prevent practically all of the damages from the storm on Nogal Canyon and about 80 percent of the damages from the storm on Socorro Canyon.

SOCORRO DIVERSION CHANNEL. TRIBUTARIES OF RIO GRANDE. NEW MEXICO (Cont'd)

FISCAL YEAR 1962: The requested amount of $400,000 is for initiation of construction and will be applied as follows:

Initiate construction of railroad alteration and bridge
Initiate construction of Diversion Channel (Outfall Channel)
Engineering and Design

NON-FEDERAL COSTS: The investment required of local interests in construction of the authorized project is estimated at $330,000, broken down as follows:

Local interests are required to maintain and operate the project upon completion. It is estimated that the average annual expenditure for maintenance, operation, and replacement will total $17,800 (July 1960).

STATUS OF LOCAL COOPERATION:

Assurance of ability to meet the requirements of local cooperation

was furnished by the Mayor of Socorro on 12 August 1960.

COMPARISON OF FEDERAL COST ESTIMATES: The current Federal cost estimate of $3,700,000 is an increase of $190,000 over the latest estimate ($3,510,000) submitted to Congress. This increase includes $165,000 due to higher price levels and $25,000 Engineering and Design based on a reanalysis of requirements.