168 
TABLE 6 
Beach Sand Reservoirs, Miscellaneous 
Coastal Zones, Oahu 
coastal zone* 
SUMMATION 
OF BEACH 
LENGTHS 
( yards ) 
AVERAGE 
SAND 
VOLUMEf 
IQ 3 yd 3 
Kahuku-Laie 
7000 
700.0 
Laie-N. Hauula 
2100 
210.0 
N. Hauula-Hauula Park 
685 
41.1 
Hauula Park-Punaluu 
4500 
270.0 
Kahana-Kuloa 
3800 
152.0 
Kaneohe Bay-Mokapu 
2950 
118.0 
Kailua 
1175 
105.8 
Kaupo Beach Park 
1850 
18.5 
Makapuu-Sandy Beach 
700 
28.0 
Sandy Beach-Portlock 
600 
12.0 
Portlock-Kahala 
7300 
146.0 
Kahala-Natatorium 
2300 
92.0 
Halekulani-Pearl Harbor 
3500 
140.0 
Oneula 
300 
36.0 
Oneula-Kalanianaole 
Park 
7600 
912.0 
Nanakuli 
2840 
568.0 
Maili-Pokai 
600 
54.0 
Pokai-Makaha 
2050 
307.5 
Makaha-Keawaula 
5400 
540.0 
Keawaula-Camp Erdman 
1500 
180.0 
Camp Erdman-Mokuleia 
3500 
280.0 
Mokuleia— Waialua 
7400 
592.0 
Waialua Bay 
400 
16.0 
Waialua-Kawailoa 
900 
36.0 
Kawailoa-Waimea 
830 
33.2 
Sunset 
1600 
128.0 
Sunset-Kahuku 
3600 
216.0 
* Listed clockwise from northeastern coast of island, 
t Volumes obtained from a single set of profiles in 1963, 
supplemented by aerial photographs and maps. 
PACIFIC SCIENCE, Vol. XXII, April 1968 
ume of the nearshore sand reservoirs off certain 
coasts of the Hawaiian Islands. 
In Table 15 the nearshore sand reservoir 
computed in cubic yards of sand per linear 
yard of beach is given for 83 selected beaches 
in the Hawaiian Islands. Since it was impossible 
to measure this sand volume to a similar water 
depth off all beaches, the limiting depth of 
water is also tabulated. In most cases no sand 
existed seaward of the limiting depth so that 
the volumes listed represent the total nearshore 
sand reservoir per linear yard of beach for that 
particular beach. (In other cases, however, 
additional volumes of sand exist seaward of 
the limiting depth so that the volumes in some 
cases are minimal.) 
The largest nearshore sand reservoirs on the 
island of Kauai are off the major rivers, Wai- 
mea, Hanapepe, and Waialua, and in Hanalei 
and Nawiliwili bays. The total nearshore sand 
reservoir around the island of Kauai is prob- 
ably in excess of 25 million cubic yards of sand, 
i.e., more than twice the total beach sand reser- 
voir for this island. 
The largest nearshore sand reservoirs on the 
island of Oahu are in Kahana and Pokai bays. 
On this island, the total nearshore reservoir is 
probably approximately equal to the beach sand 
reservoir, i.e., 10 7 cubic yards. 
Except for the reservoirs off Papohaku and 
Moomomi, very little nearshore sand exists 
around the island of Molokai. The total vol- 
ume may be between 1 and 2 million cubic 
yards. 
TABLE 7 
Beach Sand Reservoirs, Selected Beaches, Molokai 
BEACH* 
SAND 
VOLUME, 
10 3 yd 3 
6/62 
8/62 
11/62 
3/63 
6/63 
9/63 
AVERAGE 
Halawa 
21.9+ 
21.9 
20.0 
19.0 
21.9 
22.4 
21.2 
Kanaha 
2.4 
2.2 
2.5 
2.8 
2.8 
2.6 
2.6 
Onealii 
1.4 
2.0 
2.0 
1.4 
1.4 
1.6 
1.6 
Kapukuwahine 
122.5 
94.3 
94.3 
2.3 
29.9 
75.3 
69.8 
Kamakaipo 
83.2+ 
71.5 
78.0 
59.8 
83.2 
80.6 
76.0 
Papohaku 
1505.0 
1100.5 
782.8 
623.1 
880.4 
813.8 
950.9 
Kepuhi 
41.5 
52.8 
50.8 
28.0 
43.0 
48.5 
44.1 
Kawaaloa 
169.8 
187.8 
72.0 
184.8 
147.6 
159.3 
153.6 
* Listed clockwise from the northeastern coast of island, 
f Assumed value. 
