Littoral Sand Budget, Hawaii — Chamberlain 
165 
TABLE 3 
Beach Sand Reservoirs, Selected Beaches, Kauai 
BEACH* 
SAND 
VOLUME, 
10 3 yd 3 
5/62 
8/62 
11/62 
2/63 
5/63 
8/63 
AVERAGE 
Kalihiwai 
441.6 
370.8 
277.8 
202.8 
358.2 
501.6 
358.8 
Anahola 
234.0 
270.9 
242.1 
252.9 
196.2 
205.2 
233.6 
Kapaa 
40.8 
47.2 
37.6 
32.0 
36.8 
43.2 
39.6 
Wailua 
705.7 
560.3 
593.3 
530.3 
705.7+ 
185.3 
546.8 
Nawiliwili 
61.6 
49.7 
51.5 
44.4 
46.2 
56.8 
51.7 
Poipu 
15.2 
6.5 
6.5 
9.9 
11.8 
12.9 
10.5 
Hanapepe 
126.0 
166.6 
126.7 
104.3 
71.4 
30.1 
104.2 
Waimea 
433.0f 
286.9 
343.2 
431.2 
433.0 
569.4 
416.1 
Kekaha 
12.8 
80.0 
68.8 
294.4 
124.8 
120.0 
116.8 
Polihale 
2386.6 
3136.3 
3073.0 
4836.5 
3791.0 
3917.8 
3523.5 
Maninihola 
124.3 
133.0 
122.5 
120.0 
138.2 
140.4 
129.4 
Lumahai (W) 
881.3 
959.0 
468.3 
147.7 
710.5 
832.3 
666.5 
Lumahai (E) 
95.5 
79.0 
147.8 
387.0 
89.5 
94.0 
148.8 
Hanalei 
1910.6 
1739.0 
1278.4 
1024.6 
1160.9 
1339.5 
1408.8 
* Listed clockwise from northern coast of island, 
f Assumed value, based on measurement at comparable season. 
coral reefs are cut by numerous channels, some 
of which are surge channels that carry the water 
from the breaking waves up onto the reef flat. 
Other, often broader channels are frequently 
sites of old river courses across the reef (Fig. 
2). Large volumes of sand are found in these 
channels. Most of the sand is newly formed 
material from the adjacent reefs and is in the 
process of being carried shoreward into the 
beach system. However, there exist definite sand 
circulatory patterns on the reefs, and some of 
the larger channels act as routes for the trans- 
portation of beach sand into deep water. Still 
others of the reef channels during certain sea- 
sons supply sand to the beach, and during other 
seasons receive sand from the beach so that a 
sand exchange system exists between the chan- 
nels and the beach. 
Notwithstanding the type or direction of 
movement, the sand found in the nearshore reef 
channels represents an important sand reser- 
voir, the volume of which fluctuates seasonally, 
Fig. 2. Reef flat and channels, Waimanalo, Oahu. 
