Page image

27

D.—l

TABLE No. 7—continued. IRRIGATION AND WATER-SUPPLY— continued. Schedule of Schemes under Investigation.

Scheme. Source of Supply. River Discharge (Minimum). Main Canals Discharge (Maximum), as per Design. Averase .Rainfall -Rainfall Area lencrth of Length of Expenditure Estimate ! from S ' commanded Main Distribu- to 31st to Records available. (Gross). Canal. taries. March, 1924. complete. I Remarks. Maniototo (Upper Taieri) Taieri River and storage dam Cusecs. 25 Cusecs. 500 Inches. 17-35 (Waipiata) Inches. Acres. Miles. < Miles. 13-89 , 100,000 60 £ 142 - £ Modified scheme for complete irrigation of 5,000 acres is possible without storage, or for reasonable partial irrigation of 15,000 acres. 39,700 Roaring Meg Scheme : This will irrigate 3,750 acres, and may be reduced in cost by charging £11,350 to possible hydro - electric - power development. Kawarau River : A private companyis developing this portion of scheme. A survey party is engaged investigating alternative proposals for taking part of Roaring Meg water to Mount Pisa Settlement lands. This may alter estimate. 166,360 : Survey has been proceeding for several years, and general report just completed. Of the gross area of 96,000 acres, 64,000 acres are estimated to be actually suitable for irrigation. The full development of this scheme involves the construction of a storage dam, estimated to cost £250,000, but some of this cost would be borne by the Mount Ida and Scandinavian schemes. 50,000 For lands in Upper Idaburn to Nasebv. ] Includes £19,000 towards cost of Fails dam, Upper Manuherikia scheme, and £11,000 for value of present works. 93,598 To irrigate Arrow Flats, Miller's Flat, Speargrass Flat, and Frankton. Formation of an irrigation district under the Public Works Act is under close consideration by settlers and Department. 41,470 To irrigate lower flat only. Cromwell Flat and Lowburn (Roaring Meg) Roaring Meg Stream (gravity), Kawarau River (pumping) 29 3,000 40 2113 (Luggate) . I 20-73 15,000 10 30 1,186 - Upper Manuherikia Manuherikia and Dunatan Rivers,and storage dam in Manuherikia River at Falls 77 355 18-39 (Clvde, Ophir, and Blackstone Hill) 21-72 96,000 130 3,307 866,360 Mount Ida I Tributaries of Manuherikia River and Ewebum Reservoir 50 23-93 (Ewebum, Naseby) 31-59 10,000 Arrow River Arrow River 55 48 25-51 (Frankton) 26-44 6,536 17 24 16 Hawea Flats (first alternative Timaru Creek (gravity) 30 21-97 (Hawea Flat) I 20 30 21-80 4,000 11 20 21