Littoral Sand Budget, Hawaii — Chamberlain 
163 
ume per mile of total coastline and per mile 
of sandy coastline. Comparison of these figures 
shows that a real difference exists between the 
beach sand reservoirs of the various islands. 
The northwesternmost islands of Niihau and 
Kauai have the largest beach sand reservoir per 
mile of coastline. This large volume of beach 
sand is reflected in the intensity or magnitude 
of littoral processes not found on the remain- 
ing islands. From Niihau and Kauai there is 
a general decrease, in a southeasterly direction, 
in the volume of the beach sand reservoir per 
mile of coastline. The extremely low values 
for the island of Hawaii indicate the low in- 
tensity of the littoral processes that produce 
beach sand on that island. 
The average volumes of sand contained in 
the beach reservoirs on the island of Niihau 
have been computed and are presented in Table 
2. The larger reservoirs are found along the 
northwest coast, whereas the reservoirs along 
the eastern coast have very little beach sand. 
By far the largest sand reservoir on Kauai is 
at Polihale (Table 3), although those at Hana- 
lei, Lumahai, and Wailua beaches are also 
fairly large. Generally, the reservoirs are larger 
to the west and north, and smaller along the 
southeastern coast. Average beach sand reser- 
voirs computed for the remaining portions of 
sandy coastline are presented in Table 4. 
Table 5 shows that on Oahu the largest 
reservoirs lie along the eastern coast adjacent to 
the town of Waimanalo. Other very large vol- 
umes of beach sand are located at Kahana, 
Maili, and Sunset Beach. Average beach sand 
reservoirs computed for the remaining sections 
of the coast are presented in Table 6. 
On Molokai more than 75% of all of the 
beach sand is found on the western coast, 
principally at Papohaku (Table 7). A lesser 
amount is found on the northern coast in the 
Moomomi District, and the least on both the 
