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shall be covered throughout. The upper or entrance end of such box may be left entirely open; but the lower end, or end of exit, shall be fitted with a bar, 2 inches high, affixed to the floor of the box, and with a pressure or head-board, 6 inches deep, affixed to the top of the box, leaving an aperture of 2 inches in depth, and of the full width of the box.

(a) If more than one sluice head of water requires to be guaged, the guage box should be enlarged horizontally to ensure accurate measurement. But when this cannot be done, owing to natural obstacles or other sufficient reasons, the guage box may be enlarged perpendicularly, in which case the depth of the pressure or head-board shall be reduced at the rate of one inch for every additional head of water that is perpendicularly measured.

(b) The guage box shall at all times be placed on a level. When water is taken from one source only, the supply shall be guaged at the head of the race, or the source of supply. But if the race is fed, or supplied in part by any side stream or streams, the guage box shall be placed immediately below such side stream, or the last of such side streams.

(c) The velocity of the water above the guage box shall, if required, be lessened by the construction of a dam bank, or by levelling the race for a distance of 30 feet; and such velocity shall not exceed an average of one foot per second in the said 30 feet, to be guaged by a float.

11.—Supply of Water may be reduced.

When the supply of water from any creek or stream shall be insufficient for the use of all the holders of water rights thereon, it shall be lawful for the Warden, upon adequate cause being shown, to reduce the quantity, in due and equal proportion, which the said holders shall be entitled to draw therefrom, and to regulate the time and mode in which such water may be used.

Provided that nothing herein contained shall be deemed or taken to affect the rights of the holder or holders of a first water right hereafter granted on any stream; but such holder or holders shall at all times be entitled to the full supply of water for which he or they shall be registered.

12.—Number of Sluice Heads allowed.

The number of sluice heads allowed for any such race, as aforesaid, shall be as follows:—One or two miners, one sluice head, or 40 inches of water; four or more miners, two sluice heads; and so on at the rate of one sluice head to every additional two miners.

13.—Water not to be wasted.

Holders of rights shall not allow any water to run to waste; but such water shall be appropriated to the use of the next holder of a right, according to the date of their respective registrations.

14.—Transfer or Assignment.

The transfer or assignment of any race, or of any interest therein, shall not affect any right or privilege attached to such race; provided that any such transfer or assignment shall have been duly registered at the office of the Warden, and a memorandum thereof made upon the back of the original certificate.

15.—Keeping races in repair, bridging, &c.

The holder or occupier of any race shall keep the same in repair, and shall make an efficient bridge where any road in ordinary use crosses the race, upon being required to do so by the Warden.

16.—Working Ground occupied for races.

Any person desirous of working the ground on which any race or portion of a race is situated, may do so by first providing an equally good race for the use of the occupier; provided, that the consent of the Warden thereto be first obtained.

17.—Reservations.

No water right shall be granted for the use or diversion of any water which is or may be required for public purposes, or for the use of the miners generally.

18.—Water for general use.

Two sluice-heads of water shall, if required, be at all times allowed to flow in the natural course of a creek or river, for general use.

19.—Causing Claims to be flooded.

No person shall back the water of any creek, river, race, or watercourse upon any claim, or otherwise cause any claim to be flooded, either wilfully or by neglect.

20.—Obstructions to Watercourses.

No person shall deposit any earth, stones, tailings, or other substance in the bed of any watercourse, so as to obstruct the flow of water therein.

21.—Side-streams.

Where a race crosses any watercourse, the use of which is required by holders of Miners’ Rights, it shall be carried either over or under the same, so as not to interfere with the natural flow of water therein.

22.—Construction of Tail-races.

Before any person shall construct a tail-race, he shall first proceed by notice in the same manner as is directed in Section 1, for head-races. But such notice shall only require to be posted for seven (7) clear days; at the expiration whereof the applicant shall return to the Warden a copy of the notice, which shall be signed by the holders of the four (4) nearest claims, as expressing their assent to or dissent from the issue of a certificate for such tail-race. And the Warden shall enquire into any objection thereto, or into any cause of dissent as aforesaid; and shall thereafter issue or withhold a certificate of registration according to the equities of the case.