marinas were sited on a wide variety of water bodies, with about 36 percent located on 

 bays, 22 percent on rivers, 16 percent on lakes, 14 percent on the ocean, and the remainder 

 on watercourses and basins such as the Intracoastal Waterways along the east coast, 

 reservoirs, manmade canals, and locked basins. 



Boat-mix trends within tlie survey sample can best be described as following an intuitive 

 pattern. Sailboats were more prevalent on larger bodies of water and in warmer climates. 

 Powerboats outnumbered sail craft in more restrictive waters such as rivers, in colder 

 climates, and in areas reputed to have good sport-fishing waters. Commercial tour boats, 

 fishing boats, and rental craft were encountered generally throughout the survey sample. 

 Boat-mix trends were difficult to discern and any results concerning boat-mix must be 

 considered inconclusive. 



In berthing areas, the average depth was near 12 feet, but ranged from a low of 2.5 feet 

 to a high of 250 feet. The water surface fluctuations due to tides, drawdowns, and seasonal 

 variances ranged in extremes from 0.5 foot to 20 feet daily and from 1 foot to 40 feet 

 yearly. The most extreme range of water surface fluctuation on record for any body of 

 water by a marina in the survey was 65 feet. 



These basin characteristics had a predictable effect on the respective berthing faciUties. 

 Fixed-pier systems were generally used in locations where the basin depth did not exceed 20 

 feet and tlie water level fluctuation was never more than 4 feet. Sixty -five percent of the 

 sampled facilities used floating-dock systems, primarily self -manufactured. About two-thirds 

 of the floating system were secured by guide piles, the others fixed by cable or chain 

 systems, or by hinged struts, usually due to greater basin depths. 



A freshwater supply to the docks was almost universal and in all cases free. Four out of 

 five marinas sampled provided 120-volt power to tlie berths, and one-fourth also provided 

 240-volt service. A majority of the marinas had pubUc address systems, dock lights above 

 waist level, and phone service only in the office or at pubUc pay stations. 



All of the marinas in the sample provided one or more ancillary facUities. Major ancillary 

 facihties listed in order from most common to least frequently provided and percent of 

 sample marinas providing these facilities were as follows: 



Ancillary FacUity Percent 



Fuel station 



60 



Boat sales 



55 



Major boat repairs 



42 



Snack bar 



34 



Minor boat repairs 



32 



Restaurant 



26 



Boat rentals 



24 



Bait and tackle 



14 



Motels or accommodations 



10 



249 



