D.—l
TABLE No. 6— continued. IRRIGATION AND WATER-SUPPLY— continued. Schedule of Schemes under Investigation.
23
Main Canals ™ River Discharge Average Rainfall Rainfall Area Length of Length of xpenaiture ; Scheme. Source of Supply. Discharge (Maximum), from iqqa commanded Main Distribu- o 1a + Remarks. (Minimum). as per Records available. iaoo. (Gross). Canai. taries. , Marcn, : Design. j iyd '- Canterbury — Cusecs. Cusecs. Inches. Inches. Acres. Miles. Miles. £ Barrhill .. .. Rangitata River . 800 250 .. 36-74 53,000 .. .. 1 f T .. .. . Mayfield- Hinds .. Rangitata River .. 800 450 .. 36-21 113 000 .. .. Investigations mto the feasibility of irrigation in Orari .. .. Rangitata River .. 1,500 250 .. 32-23 40! 000 .. .. • Canterbury Province have been in hand Rakaia .. .. Rakaia River .. 2,000 450 .. 32-68 92,'000 .. .. >20 since January, 1934. Investigations include Valetta-Tinwald .. Rangitata River .. 800 450 23 36-96 84 000 40 .. ' the following phenomena, viz. : Soil moisture, Investigations of other .. . „ .. ., mechanical analysis of soil, depth of ground proposed schemes "water, evaporation, rainfall, and river-flow. M arlborough — Investigation of pro- .. .. • .. .. . # # # # # _ 2,906 Comprehensive investigation surveys of schemes posed schemes f or the Wairau Valley and parts of the Wairau Plains are in hand. Otago Central — Cromwell Flat and Low- Hydro-electrie develop- 29 .. 20-72 23-87 .. .. .. 3,774 Hydro-electric scheme under investigation, burn (Roaring Meg) ment of Roaring Meg (Roaring j (Luggate) Power would be available for pumping irrigaand pumping from Meg) | tiorf supplies to 8,000 acres in Upper Clutha Clutha and Kawarau | Valley. Portion of this area could be supplied Rivers ; from Hawea River power and pumping scheme Maniototo (Upper Taieri) Taieri River and storage 25 500 16-88 17-79 100,000 60 .. 16,220 Modified scheme for complete irrigation of d am (Waipiata) 5,000 acres is possible without storage, or for reasonable partial irrigation of 15,000 acres. Surveys practically complete for scheme to irrigate 100,000 acres. Scandinavian .. Tributaries of Manuheri- .. 20 30-66 31-76 .. .. .. .. For lands about St. Bathan's. To bear £15,000 kia River (St. Bathan's) towards cost of Falls dam, Upper Manuherikia scheme. Irrigable area, 3,000 acres. Upper Clutha Valley (in- Hawea and Clutha Rivers 580 .. 21-97 24-85 .. .. .. .. Investigations have been made for a hydroeluding Hawea Flats) (pumping) with power- (Hawea R.) (Hawea Flat, Lug- electric power development at the outlet of station at outlet of 3,000 gate, and Tarras) Lake Hawea. Sufficient power would be Lake Hawea (Clutha R.) available to pump water from the Hawea and Clutha Rivers to 13,700 acres in the Upper Clutha Valley. Upper Manuherikia (ex- Manuherikia River and 36 .. 20-31 20-42 16,000 58 60 6,553 Surveys and investigations have been made for tension of Omakau storage dam at Manu- (at dam- (Clyde, Opliir, and the extension of the Omakau scheme (now Scheme) herikia Falls site) Blackstone Hill) under construction) to supply lands between Tiger Hill and Clyde. Irrigable area, 12,000 acres. Investigation of proposed .. .... .. .. .. . . .. 2,145 Includes the reading of river and rain gauges. schemes Total: Schemes under investigation .. .. .. .. .. .. .. 52,322 Grand total .. .. .. .. .. .. .. .. .. 1,676,656 * Includes expenditure from Public Works Fund, Consolidated Fund, Unemployment Fund; also administration and loan charges.
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