12-19-2020, 06:30 PM
Looks like it was addressed at one time but not resolved.
One man made feature that has had a significant impact on Hawaiian Acres is the series of water diversion walls that total over half a mile in length and up to 12' in height. These walls channel water into Hawaiian Acres. This diversion system receives overflow from the Mt. View Drainage project developed by the county. This overflow can and has reached five feet or more in heavy rains. These walls were built by Olaa Sugar Company (AMFAC) starting in 1938, to divert floodwaters away from sugarcane fields along the Mauna Loa-Kilauea boundary into what was then considered wasteland. W.H. Shipman owned this land that was later to become Hawaiian Acres. The original developer of Hawaiian Acres became involved in litigation with AMFAC regarding these walls just after the time of subdivision. AMFAC purchased the land under and around the walls shortly after, but has since sold almost all of them. The unpredictability regarding this flood channel is due to policy failures, as well as other related geological features, and increases the risk for all landowners in the vicinity. There is some concern that the cemented wall will eventually break apart due to tree roots, and lack of maintenance. If this should happen, the problem could become even more serious.
One man made feature that has had a significant impact on Hawaiian Acres is the series of water diversion walls that total over half a mile in length and up to 12' in height. These walls channel water into Hawaiian Acres. This diversion system receives overflow from the Mt. View Drainage project developed by the county. This overflow can and has reached five feet or more in heavy rains. These walls were built by Olaa Sugar Company (AMFAC) starting in 1938, to divert floodwaters away from sugarcane fields along the Mauna Loa-Kilauea boundary into what was then considered wasteland. W.H. Shipman owned this land that was later to become Hawaiian Acres. The original developer of Hawaiian Acres became involved in litigation with AMFAC regarding these walls just after the time of subdivision. AMFAC purchased the land under and around the walls shortly after, but has since sold almost all of them. The unpredictability regarding this flood channel is due to policy failures, as well as other related geological features, and increases the risk for all landowners in the vicinity. There is some concern that the cemented wall will eventually break apart due to tree roots, and lack of maintenance. If this should happen, the problem could become even more serious.