Droughts can do significant harm to the industry, dropping water levels so low in lakes, rivers and streams that boaters can't use them and dealers, boatyards and marinas lose significant business.
Study says California drought is worst in 500 years
California is in a fourth year of a severe drought.
VIDEO: Drought causes California boats to be pulled from lake
The first day of summer brought a blow to boaters on Folsom Lake in California.
VIDEO: California lake will close because of drought
Water is receding so far that ramps at Diamond Valley Marina are being left high and dry, water district spokesman Bob Muir said.