feet of the west jetty at Weekapaug; profile line 07 is approximately 2 
miles east of Watch Hill Point. 
Table 4. Shoreline and unit volume changes at 
Misquamicut Beach for 17 December 
1970 storm. 
Plus 12! 
unit volume 
(yd3/ft) 
PRCHAR! 
unit volume 
(yd?/ft) 
MSL 
shoreline change 
(ft) 
4, 
= 29). 
Profile 
line 
Ol 
lSee Figure 8 for definitions. 
There was minor accretion on the upper parts of profile lines 01 and 
04. This may be due to eolian deposition in the dunes, or accumulation 
of slump material at the toe of the dune. Profile line 01 is an example 
of accumulation of slump material with erosion of the dune scarp and a 
comparable accretion at the toe. Accretion occurred below the 1-foot 
contour on profile lines 01 and 07 where surveys reached the -2-foot 
contour. 
The average net volume change above MSL between 9 and 23 December on 
the seven Misquamicut Beach profiles was -4.0 cubic yards per foot. The 
MSL contour was displaced landward at all profile lines except 01 and 07. 
Pipe profiles were located along profile lines 04 and 06. At profile 
line 04, pipes 1 to 5 were read on both 9 and 19 December 1970; pipes 3 
and 4 were damaged, presumably by the storm. Maximum erosion at any one 
of the undamaged pipes was 2 feet, measured at pipe 2 where the sand level 
changed from 7.0 to 5.0 feet MSL. There was no accretion at any of the 
pipes. 
At profile line 06, pipes 1, 2, and 5 were read on both 9 and 23 
December 1970. Maximum erosion at any one of the pipes was 0.5 foot, 
measured at pipe 5 where the sand level changed from 0.5 to 0.0 foot MSL. 
There was no accretion at any of the pipes. 
33 
