To provide a water intake apparatus that suppresses accumulation of rubbish, facilitates maintenance, suites to a wide range of favorable installation places and is easy to use, the apparatus to be used for a water utilization apparatus such as a small-scale hydroelectric power generator, and the like, and various water utilization facilities and the like.

A water intake apparatus 1, for installation in a river, a water channel and the like and use in discharging water, or supplying a small-scale hydroelectric power generator and the like with the water after introducing from the river or channel and removing rubbish from the water, includes: a water intake camber 4 closed with a cover member 8 on the upstream side and provided with a water outlet 4a on the downstream side; plural vertical plates 6 arranged along sides of a part that is formed with the width increasing downstream; a rotatable roller 7 that is disposed upstream of the cover member 8 and freely rotatable about a vertical line; and support plates 2 and 3 for supporting the respective vertical plates 6 by sandwiching the water intake chamber from the top and bottom. Further, the water from such as river or channel is introduced into the water intake chamber 4 via an opening 9 adjacent to the vertical plates 6, discharged from the water outlet 4a and supplied to the small-scale hydroelectric power generator and the like, or discharged.