Littoral Sand Budget, Hawaii — Chamberlain 
169 
TABLE 8 
Beach Sand Reservoirs, Miscellaneous 
Coastal Zones, Molokai 
COASTAL ZONE* 
SUMMATION 
OF BEACH 
LENGTHS 
(yards) 
AVERAGE 
SAND 
VOLUMEf 
10 3 yd 3 
Kahiu-Halawa 
400 
24.0 
Halawa 
250 
10.0 
Halawa-Kanaha 
100 
4.0 
Kanaha-Honouliwai 
150 
6.0 
Honouliwai 
150 
6.0 
Honouliwai-Kalaeloa 
7500 
75.0 
Kalaeloa-Onealii 
6375 
63.8 
Onealii-Kamehameha 
Kamehameha- 
4750 
47.5 
Hale 0 Lono 
Hale 0 Lono- 
7250 
72.5 
Kapukuwahine 
360 
14.4 
Kapukuwahine 
1275 
76.5 
Kapukuwahine-Laau 
1100 
66.0 
Kamakaipo-Kaunalu 
100 
6.0 
Kaunalu 
150 
12.0 
Kaunalu-Papohaku 
300 
36.0 
Papohaku 
1550 
775.0 
Kepuhi 
425 
106.2 
Kepuhi-Ilio 
800 
120.0 
Kapalauoa-Kawaaloa 
1725 
69.0 
Kawaaloa 
300 
45.0 
Moomomi 
100 
25.0 
Puwahi 
950 
76.0 
Kalaupapa 
600 
48.0 
* Listed clockwise from northeastern coast of island, 
f Volumes obtained from a single set of profiles in 1963, 
supplemented by aerial photographs and maps. 
Around the island of Lanai the nearshore 
sand reservoirs are also very small. The largest 
is off Polihua but the total volume probably 
does not exceed 10 6 cubic yards. 
On Maui large nearshore sand reservoirs ex- 
ist in Hana Bay and off Honokahua and Kihei, 
and a total nearshore sand reservoir equal to 
the total beach sand reservoir seems probable, 
i.e., 5 X 10 6 cubic yards. 
On Hawaii there are small nearshore sand 
reservoirs in Waipio Bay and off Kailua, Ha- 
puna, and Kawaihae, probably not exceeding 
10 6 cubic yards. 
Seasonal Fluctuations 
In tropical latitudes such as the Hawaiian 
area, the climatic year is not divided into four 
but rather into two natural meteorological sea- 
sons. Winter is well defined by the weakening 
of the northeast trade winds and the ap- 
pearance of southwesterly winds. During the 
summer (April through November), strong 
trades blow from the eastern and northern 
quadrants, or transitional wind conditions exist. 
During 1962-63 southwesterly or westerly 
winds dominated the local weather from No- 
vember 1962 to April 1963 (Fig. 3). The re- 
maining months of these two years, except for 
January and February, 1962, and December 
1963, were exclusively under the influence of 
northeasterly trade winds. 
The seasonal fluctuations of the beach sand 
reservoir for each of the 76 selected beaches as 
given in Tables 3, 5, 7, 9, 11, and 13, are sum- 
marized by island in Figure 4. Although the 
selected beaches represented in this figure do 
not include the entire beach sand reservoir, 
they are well distributed geographically on each 
island so that the total accretion or erosion as 
indicated, while not representing the total mag- 
nitude of change for each island, does repre- 
sent quite accurately the direction of change, 
i.e., total island accretion or erosion. 
On certain of the islands (e.g., Molokai and 
TABLE 9 
Beach Sand Reservoirs, Selected Beaches, Lanai 
BEACH* 
SAND VOLUME, 10 3 yd 3 
6/62 
9/62 
12/62 
4/63 
AVERAGE 
Halulu 
7.7+ 
28.7 
1.4 
7.7 
11.4 
Hauola 
18.4 
9.6 
17.6 
17.2 
15.7 
Hulopoe 
77.4 
74.7 
70.6 
74.2 
74.2 
Polihua 
532.8 
516.8 
321.6 
320. Of 
422.8 
* Listed clockwise from the northeastern coast of island, 
f Assumed value. 
