During 1890 excessive rains and bad roads hindered work in bore-sinking, instead of the dry periods which had been the cause of embarrassment for the preceding seven years. The only newly completed bore during this year was that at McKinlay, which at 1,002 ft. gave a supply of 224,000 gallons a day. Water was struck in two other bores, but of insufficient quantity, and work was still proceeding. The obstacles encountered in boring, often from the breaking of machinery, but more frequently from the want of thoroughly skilled drillers, must have been disheartening, especially in cases where the sinking was done without useful scientific information, and bores had to be abandoned after months--even years in cases--of labour and worry. In his report of 20th January, 1893, the Hydraulic Engineer discusses at length the question of artesian water supply. The country is, he holds, now in a much improved position to encounter long droughts. Valuable information has been and is still being obtained by exploration as to the prospects of artesian water being found, and also as to the conservation of surface water by artificial means. He says that fifteen bores, averaging 1,571 ft. each, have been sunk by the department, and that although the work has been of a pioneering character only one sunk to the contract depth has proved a failure. He estimates that about 88,000 square miles in the western country have been proved to be water-bearing, and he urges that as large areas still remain to be explored the present is a favourable time for inviting tenders for the work. STREAM-GAUGING RECOMMENDED. In this report the Hydraulic Engineer directs attention to the necessity of acquiring information as to the extent of our surface-water resources. In three of the southern colonies, he mentions, a systematic practice of gauging streams has for some time been in force. The work will be useless unless it is carried on for a number of years. The essential thing to be ascertained is not the maximum flow of a stream, but the minimum; or rather, perhaps, the maximum that can be expected from a stream in a season of maximum aridity. "Without such data," he continues, "no fair distribution of water, no scheme of water supply, or irrigation, or drainage can be well considered; nor can storage and distribution or drainage works be economically designed, or their permanency and efficiency ensured." He therefore urges the matter of stream-gauging upon the favourable consideration of the Government, adding that the paramount necessity of active administration in respect of water conservation generally has been recognised by Parliament by legislation already placed upon the Statute-book. WASTE OF ARTESIAN WATER.