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1937. NEW ZEALAND.

DEPARTMENT OF LANDS AND SURVEY. SWAMP DRAINAGE. REPORT FOR THE YEAR ENDED 31st MARCH, 1937, TOGETHER WITH STATEMENTS OF ACCOUNTS.

Presented to both Houses of the General Assembly pursuant to Section 13 of the Swamp Drainage Act, 1915.

Department of Lands and Survey, Sir, — Wellington, Ist August, 1937. In pursuance of section 13 of the Swamp Drainage Act, 1915, I have the honour to forward the report of the Chief Drainage Engineer covering operations on lands proclaimed under the Swamp Drainage Act and amendments. I have, &c., W. Robertson, The Hon. Frank Langstone, Minister of Lands. Under-Secretary for Lands.

REPORT OF CHIEF DRAINAGE ENGINEER. Sir, — I have the honour to submit my annual report on the areas proclaimed under the Swamp Drainage Act, 1915, and its amendments. Kaitaia Drainage Area (61,430 Acres), Mangonui County. The maintenance of completed works was the only work of importance undertaken during the year. As usual the contracts were called for in the late summer, and all this work was satisfactorily carried out by the contractors. In addition to the cleaning of drains in the autumn, it is found necessary to carry out minor cleaning at other times of the year. In the lower-lying areas it would be a decided benefit if the flat, gradient drains could be given an extra dragging in the spring, but consequent on the response from rates not being very satisfactory it is impossible to provide for extra work of this nature. Rainfall and river-gauge readings were taken throughout the year as shown on schedule hereunder :—

Rainfall and River-gauge Readings at Kaitaia for Year ending 31st March, 1937.

Stop-banks. —As stated in the previous year's report, a very high spring tide topped the stop-banks on the foreshore and did considerable damage to these banks and also to the settlers' land adjoining. The repairing of these banks was taken in hand immediately, and is now well on towards completion. These banks were constructed with a view to preventing only ordinary spring tides from overflowing the lands, and now the settlers affected have requested that the banks should be enlarged so as to safeguard their lands from the extraordinary high tides. This is being investigated, and from the data now available it is evident that a very large expenditure would be necessary to achieve that object.

Highest Rain- Kaitaia River-gauge, Wai- .... ,, Rainfall Wet Days T fal1 for kuriki Bridge. Month " (Inches). in Month. Twenty-four Hours tt. I i j (Inches). Highest. Lowest. 1936. April .. •• ■■ 1-58 10 . 0-34 53-7 52-6 May .. 1-40 9 0-60 58-4 52-5 June .. •• •• 3-52 18 1-15 56-6 52-5 July •• •• 5-26 24 1-15 59-7 54-0 August .. •• •• 5-99 17 1-73 66-3 53-6 September .. .. •• 3-09 19 0-94 58-4 53-6 October .. .. 3-73 12 1-54 65'4 52-9 November .. .. 7-87 15 2-34 67-8 53-6 December .. .. •• 4-24 7 2-00 66-0 52-9 1937. January .. •• 6-84 15 1-37 64-5 54-0 February 3-10 9 0-97 55-8 52-7 March . • • • • • 2-12 8 1-33 55-9 52-7 Totals .. •• 48-74 163

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Drains. —Some 65 miles of drains were cleaned during the year. Whangatane Spillway.—The erosion at the spillway intake has not increased very much during the year, but shortly it will be necessary to erect some protective works in this locality. The construction of a breastwork on the western side of the channel would remove the source of danger, and with this object in view inquiries are being made as to the amount of steel-sheet piling that can be made available from other works. There is no question that the construction of this overflow channel is the key to the solution of the drainage problem in the district, but it is not large enough to cope with the considerable volume of water that is to be expected periodically. Kaitaia River.—The river above the spillway intake is definitely enlarging its channel, and as a result of this erosion the banks, in places, have slipped in to a considerable extent. The contract mentioned in last year's report for the clearing of fallen timber from the channel was completed before last winter, and appreciably improved the carrying-capacity of the river. Works Expenditure. —The total expenditure for the year was £1,820. Drainage Rates. —The following schedule shows the position of the rates struck and collected in the two wards : —

Hikurangi Drainage Area (50,000 Acres), Whangarei County. No work has been carried out on this area during the year under review, and all staff has been disbanded or transferred to other localities. The investigation made by the District Engineer and myself definitely showed that it was impossible to prevent flooding on the swamp area, and that if further major works were carried out between Lewis's Bridge and the falls at Ruatangata there was very grave danger of serious slips occurring in this narrow valley, whilst it was certain that the hastened discharge would detrimentally affect the low-lying lands farther down the Wairua River. The stores at Apotu are being overhauled, and every endeavour is being made to utilize them on other works, but, unfortunately, there is a lot of plant that has been used on the works for many years and is now practically worn out and unserviceable. The works expenditure was—Capital, £346 Bs. 4d. ; maintenance, £115 19s. : total, £462 7s. 4d. n Waihi Drainage Area (20,000 Acres), Tauranga County. The drainage outlets, stop-banks, and flood-gates in this area were maintained oy the Department, improvements and replacements being carried out when desirable. The total length of drains annually maintained is 37 m. 73 ch„ the bulk of this work being done by contract. Two lengths of drain totalling 225 ch. were reconditioned during the year. A gang was employed removing willows and other obstructions from the upper reaches of the Kaikokopu Stream. Two new steel flood-gate doors were installed to replace concrete doors, and the outlets ot these gates were protected with stone. . ; The Monighan dredge was employed for four months of the year removing accumulated silt, from the upper reaches of the Wharere Canal. The distance covered during this period was 115 ch a total of 30,438 cubic yards of spoil being removed. It will be necessary to consider in the'near future the employment of a light walking-plant on maintenance dredging m the lower reaches of the Kaikokopu Canal. , Flax-milling was carried out throughout the season by the company which leases the major portion of the unsettled swamp area. Development was proceeded with by the Department on a swamp area west of the Wharere Canal, the total area grassed to date being 738 This land is being prepared as dairy-farms, five farms being fully equipped for this purpose Bullocks and sheep are being run on the balance of the area to assist consolidation and to contro ragwort. A water-supply was provided for the area, and an electrically operated flood-pump will shortly be installed to maintain a lower average water-level m the low-lying areas. Late in the year the Native Department commenced development operations m the Waewaetutuki Block. The expenditure during the year was £1,109 12s. Bd. Drainage rates struck totalled—Capital £658 7s. 9d„ maintenance £934 2s. 7d., whilst the amount collected was—Capital £322 19s. 5d., maintenance £812 Is. lid. Poukawa Drainage Area (15,567 Acres), Hawke s Bay. Maintenance of completed work was carried out during the year, and I am indebted to the Commissioner of Crown Lands, Napier, for carrying out inspections of cleaning contracts. The expenditure during the year was £94- Is. 9d. .. , nffi Rates struck amounted to £1,121 Is. sd„ whilst £679 13s. 9d. was collected by the District Office at Napier. T , . 1 have, &c., R. G. Macmorran, The Under-Secretary for Lands, Wellington. Chief Drainage Engineer.

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Capital. Maintenance. Struck. i Collected. Struck. Collected. j £ s. d. £ s. d. £ S. d. £ s. d. Town .. 411 8 8 221 19 6 201 1 3 86 18 8 R ura l .. .. 3,136 18 9 374 3 4 1,357 12 11 207 12 9

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SWAMP LAND DRAINAGE SCHEMES. Rate Accounts for Year ended 31st March, 1937. Kaitaia IJeaoage Abea. Special Rate Accounts : Capital. Rural Town Rural To»b Subdivision. Subdivision. Subdivision. Subdivision Dr■ £ s. d. £ s. d. Cr. £ s. d. £ s. d. £ s. d. Transfer to Reserve Fund .. .. 391 9 2 53 9 9 Balance .. .. .. .. 1,077 15 2 45 10 4 Interest charge .. .. .. 2,248 10 10 356 10 3 Rates levied .. 3,110 8 2 Remissions .. .. .. 188 8 0 0 15 9 Less Rebate .. 376 17 5 Balance at 31st March, 1937 .. 1,208 0 6 68 14 2 2,733 10 9 411 8 8 Penalty, 10 per cent, unpaid rates ... 225 2 7 22 10 11 £4,036 8 6 £479 9 11 £4,036 8 6 £479 9 11 General Rate Accounts : Maintenance. Rural Town Rural Town Subdivision. Subdivision. Subdivision. Subdivision. Dr. £ s. d. £ s. d. Cr. £ s. d. £ s. d. Cost of maintenance .. .. 1,191 15 9 183 11 6 Balance .. .. .. .. 31 13 7 75 11 4 Remissions .. .. .. 37 12 4 0 411 Rates levied .. .. .. 1,344 12 4 201 1 3 Balance at 31st March, 1937 .. 257 910 103 15 5 Penalty, 10 per cent, unpaid rates .. 110 12 0 10 19 3 £1,486 17 11 £287 11 10 £1,486 17 11 £287 11 10 Waihi Drainage Abea. Special Rate Accounts: Capital. Pukehina Kaikokopu Pukehina Kaikokopu Ward. Ward. Ward. Ward. Dr. £ s. d. £ s. d. Cr. £ s. d. £ s. d. Transfer to Reserve Fund .. .. 34 2 6 51 3 9 Balance .. .. .. .. 867 2 7 31 2 4 Interest charges .. .. .. 215 17 6 323 16 3 Rates levied .. .. .. 339 9 7 407 6 4 Remissions .. .. .. .. 9 15 11 Penalty, 10 per cent, unpaid rates .. 33 18 11 22 15 9 Balance at 31st March, 1937 .. .. 990 11 1 76 8 6 £1,240 11 1 £461 4 5 £1,240 11 1 £461 4 5 General Rate Accounts: Maintenance. Pukehina Kaikokopu Central Pukehina Kaikokopu Central Ward. Ward. Ward. Ward. Ward. Ward. Dr. £ s. d. £ s. d. £ s. d. Cr. £ s. d. £ s. d. £ s. d. Balance .. .. .. .. 43 10 7 Balance .. .. 833 12 3 672 9 2 Cost of maintenance .. 135 9 6 812 18 6 406 9 3 Rates levied .. .. 122 4 4 314 19 0 399 15 7 Remissions .. .. .. 18 19 9 8 10 11 Penalty, 10 per cent, unBalance at 31st March, paid rates .. .. 12 4 5 14 12 9 21 3 7 1937 .. .. 832 11 6 170 2 8 .. Balance at 31st March, 1937 .. .. .. .. 37 11 7 £968 1 0 £1,002 0 11 £458 10 9 £968 1 0 £1,002 0 11 £458 10 9 Pottkawa Drainage Abea. Special Rate Account: Capital. Dr. £ s. d. Cr. £ s. d. Remissions .. .. .. .. .. 11 15 4 Balance .. .. .. .. .. 280 0 5 Transfer to Reserve Fund .. .. .. 128 15 3 Rates levied. .. .. .. .. .. 1,121 1 5 Interest charge .. .. .. .. 948 14 9 Penalty, 10 per cent, unpaid rates .. .. 55 0 10 Balance at 31st March, 1937 .. .. .. 366 17 4 £1,456 2 8 £1,456 2 8 General Rate Account: Maintenance. Dr. £ s. d. Cr. £ s. d. Maintenance, completed works .. .. .. 55 13 1 Balance .. .. .. .. .. 274 7 5 Balance .. .. .. .. .. 218 14 4 £274 7 5 £274 7 5 Receipts and Payments Account for Year ended 31st March, 1937. . Public Consolidated Public Consolidated Receipts. Works Fund. Fund. rayments. Works Fund. Fund. Rents from national - endowment £ s. d. £ s. d. Kaitaia Drainage Area : Mainten- £ s. d. £ s. d. land in Waihi Drainage Area .. .. 454 11 1 ance, completed works .. .. 1,821 11. 0 Special rate for interest and sinking Waihi Drainage Area: Maintenance, fund — completed works .. .. .. 1,137 2 8 Waihi Drainage Area .. .. .. 322 19 5 Poukawa Drainage Area— Kaitaia Drainage Area .. .. 596 210 Drainage works, &c. .. .. 95 16 3 Poukawa Drainage Area .. .. 679 10 0 Maintenance, completed works .. .. 57 12 3 General rate for administration and Hikurangi Drainage Area — maintenance — Drainage works, &c. .. .. 347 8 4 Waihi Drainage Area .. .. .. 812111 Maintenance, completed works .. .. 115 19 0 Kaitaia Drainage Area .. .. 294 11 5 Refund of rates .. .. .. 8 15 6 Poukawa Drainage Area .. .. 0 3 3 Plant, &c. (general) .. .. 2,261 18 11 Rates paid in advance .. .. .. 0 0 6 Transfer, receipts to Treasury Thirds .. .. .. .. 145 7 10 Adjustment Account .. .. .. 3,436 15 9 Sundry rents .. .. .. .. 25 17 6 Transfer, receipts to Public Works Miscellaneous .. .. .. .. 114 5 6 Fund .. .. .. 325 13 9 Credits in reduction of expenditure 325 13 9 Transfer, expenditure to Treasury Adjustment Account .. .. .. 3,132 4 11 Transfer, expenditure to Public Works Fund .. .. .. 2,705 3 6 £3,030 17 3 £6,577 16 2 £3,030 17 3 £6,577 16 2

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Balance-sheet as at 31st March, 1937. Liabilities. £ s. d. ' Assets. Capital Account, Public Works Fund .. .. 692,020 18 5 Kaitaia Drainage Area— £ s. d. £ s. d. Reserve: Repayment capital costs— Allocated cost of works on which Kaitaia Drainage rates are levied Area £ s. d. £ s. d. Rural subdivision .. .. 60,000 0 0 Rural subdivision 2,423 15 5 Town subdivision .. .. 8,200 0 0 Town subdivision 331 4 9 — 68,200 0 2,755 0 2 Excess cost of works not recoverWaihi Drainage able .. .. .. 155,944 14 2 Area Interest Account — Proportion Pukehina Subdi- chargeable to district .. 141,686 17 9 vision.. .. 236 16 7 : 297,631 11 11 Kaikokopu Subdi- Waihi Drainage Area— vision.. .. 355 411 Allocated cost of works on which 592 1 6 rates are levied— Poukawa Drainage Area .. 595 13 3 Pukehina Subdivision .. 5,000 0 0 3,942 14 11 Kaikokopu Subdivision . . 7,500 0 0 Rate Accounts— Central Subdivision .. 49,414 3 6 Special Rate Accounts : Capital— 61,914 6 Kaitaia Drainage Excess cost of works not recoverArea— £ s. d. able .. . . .. 24,526 1 6 Rural subdivision 1,208 0 6 Interest Account — Proportion Town subdivision 68 14 2 chargeable to district .. 43,052 11 11 1,276 14 8 67,578 13 5 Waihi Drainage Poukawa Drainage Area — Area Drainage works .. .. 16,013 19 9 Pukehina Subdi- Interest Account: Proportion vision .. 990 11 1 chargeable to district .. 2,247 1 4 Kaikokopu Sub- 18,261 1 1 division .. 76 8 6 Hikurangi Drainage Area— — 1,066 19 7 Drainage works .. .. 247,249 9 0 Poukawa Drainage Area .. 366 17 4 Interest Account : Proportion .— 2,710 11 7 chargeable to district .. 135,213 0 4 General Rate Accounts : Mainten- 382, 462 9 4 anoe Mangawai Drainage Area— Kaitaia Drainage Drainage works .. .. 1,877 19 3 Area . £ s . d. Interest Account : Proportion Rural subdivision. . 257 910 chargeable to district .. 1,411 50 Town subdivision 103 15 5 3,289 361 5 3 Harihari Drainage Area—• Waihi Drainage Drainage works .. .. 4,355 211 Area Interest Account : Proportion Pukehina Subdivi- chargeable to district .. 2,892 16 7 sion .. .. 832 11 6 - 7,247 19 6 Kaikokopu Subdi- Buildings .. .. .. .. 1,406 1 9 vision .. 170 2 8 Wharves .. .. .. .. • ■ ob 8 5 1,002 14 2 Plant and machinery .. .. .. .. 29,537910 Poukawa Drainage Area . . 218 14 4 Loose tools .. .. .. .. .. 269 10 6 - 1,582 13 9 Stores on hand .. .. .. •• 3,769 0 3 Sundry creditors— Sundry debtors for rates— Miscellaneous . . .. . . 18 8 9 Drainage District. Capital. Maintenance. Departmental .. .. 015 4 £ s. d. £ s. d. £ s - d--1 19 4 1 Kaitaia.. .. 14,550 10 3 5,027 19 2 19,578 9 5 Rents charged in advance .. 223 18 0 Waihi .. .. 5,229 10 0 6,331 7 4 11,560 17 4 Payments in advance — Poukawa .. 2,506 610 169 4 0 2,675 10 Rents.. .. .. • • 5 2 0 Sundry debtors — Rates.. .. .. 4 18 4 Rent under section 4 (2), Swamp — 10 0 4 Land Drainage Amendment Act, Suspense Account .. .. • ■ • • 0 6 0 1926 .. .. ■ ■ 1,200 7 0 Writings-off in Suspense .. .. • • 810 19 2 House-rents .. .. . . 20 5 0 Treasury Adjustment Account .. .. 288,796 14 7 Law-costs .. .. .. 679 6 1 Miscellaneous .. .. .. 48 3 0 Departmental .. .. .. 602 16 10 2,550 17 11 Rate Account — General Rate Account —Maintenance — Waihi Drainage District: Central Subdivision 37 11 7 Maintenance-costs: Hikurangi.. .. .. 434 8 9 Postponed rent .. .. 502 1911 Premiums on conversion .. .. .. 153 0 0 Revenue Account — Waihi Drainage Area: Central Ward .. .. .. .. 9,829 5 6 Losses in Suspense .. .. •. .. 810 19 2 Cash in transit from Post-office .. .. 360 6 8 £990,118 0 10 £990,118 0 10 W. Robertson, Under-Secretary for Lands, ffi. E. Shaw, Chief Accountant. I hereby certify that the Rate Accounts and Balance-sheet have been duly examined and compared with the relative books and documents submitted for audit, and correctly state the position as disclosed thereby, subject to the explanatory notes dealing with Departmental Accounts generally as appearing at commencement of Parliamentary Return [8.-l. Pt. IV.]—J. H. Fowler, Controller and Auditor-General. Approximate Cost of Paper.—Preparation, not given ; printing («90, copies), £6 10s.

By Authority: E. V. Paul, Government Printer Wellington.—l 937.

Price 3d.]

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C-04 DEPARTMENT OF LANDS AND SURVEY. SWAMP DRAINAGE. REPORT FOR THE YEAR ENDED 31st MARCH, 1937, TOGETHER WITH STATEMENTS OF ACCOUNTS., Appendix to the Journals of the House of Representatives, 1 January 1937

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C-04 DEPARTMENT OF LANDS AND SURVEY. SWAMP DRAINAGE. REPORT FOR THE YEAR ENDED 31st MARCH, 1937, TOGETHER WITH STATEMENTS OF ACCOUNTS. Appendix to the Journals of the House of Representatives, 1 January 1937

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