Record Details
page 1
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 1 Regional director's report of February 1951 on Central Utah Project, Utah : a supplement to The Colorado River Storage Project Report, page 1 |
| Coverage | Electronic reproduction; |
| Source | United States Department of the Interior Bureau of Reclamation Region 4 |
| Publisher | Brigham Young University |
| Date | 2005-10-13 |
| Format | 1 text/PDF |
| Rights | Brigham Young University; http://lib.byu.edu/about/copyright/generic.php Public Domain Public |
| Language | English; eng; en |
| Relation | Central Utah Project; Western Waters Digital Library; CORPS OF ENGINEERS REPORT 1 general eneral G the purposes of this memorandum are to furnish recommendations as to the desirable degree of flood control protection and to present a flexible means based upon information from flood damage investigations to date and consistent with the standard metods methods used by this office of evaluating the flood control benefits properly creditable to any plan of improvement under consideration for the subject area the potential benefits shown herein are limited to those attainable by prevention of channel overflow no data are available concerning potential benefits if any creditable to favorable modification of sedimentation rates in the existing storage facility or to reduction of losses resulting from seepage for convenience in determining benefits ac curing to the various individual elements of any c coordinated plans of im imurove improve onove ment to be considered the area has been divided into 3 reaches as shown on map no 15 1 attached 2 20 it may be stated as a generel general gener cl concept that in order to avoid creating a f false alse faise aise sense of security any rural area should be protected against floods as large as that whicn whieft whitn could be reasonably expected to occur once in 50 0 to 75 years and urban areas against the f flood lood expected to occur in 150 to 200 years 3 flood control benefits potential benefits creditable to alleviation of the flood hazard in the subject area are considered to be derived from reduction of direct and indirect flood damage the potential benefits from improvement in land use made possible by the flood protection are considered to be negligible in this area the method of evaluation of flood damage reduction type benefit consists of a damage frequency analysis past stream streamflow sfcreamflow flow records in combination with field inventories of experienced flood damages and estimated damages from synthetic floods provide the basis for evaluation of this type of benefits 4 40 benefits from damage reduction the maximum bene benefits firs fits of this thig type which are potentially obtainable under the conditions of a stream flow assumed are equal in amount to the average annual flood damages under pre project conditions and for the sublie subject ct area amount to 17700 as shown by reaches in table no 1 attached these damages are obtained from annual damage curves plates 1 C to 3 C attached which are developed from pre project flow frequency curves plate 1 B attached and damage flow curves plates 1 A to 3 A attached in developing the flow frequency curves it has been assumed that all existing reservoir and diversions were functioning but would not produce change in flow during times of major snow melt flood flows damage from rainfloods rain floods wasfoundto was found to be negligible furthermore rainfloods rain floods would be controlled by the existing reservoir operated fo for r conservation purposes only consequently detailed analysis of these floods have been omitted from this |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/9993 |
