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| Project Name: | Erosion Control Studies for Agricultural Roads in the Kaiaka - Waialua HUA |
| ASO Log No.: | 95-002 |
| Start/End Date: | September 1994 to September 1995 |
| Federal Funds: | $36,580.00 |
| Matching Funds: | $24,460.00 |
| Contractor: | Peter Gibson West Oahu Soil and Water Conservation District 1001 Kamokila Blvd. Kapolei, HI 96707 Phone: (808) 674-3279 Fax (808) 861-8519 |
| Background/ Overview: |
Kaiaka – Waialua Bay is listed as a DOH Water Quality Limited Segment due to nonpoint source pollution. State monitoring showed that turbidity and total phosphorous levels in the bay exceeded State Water Quality Standards. Kaiaka – Waialua Bay is approximately 1200 acres in size, and receives drainage from 70,700 acrea Kaiaka – Waialua Hydrologic Unit Area. |
| Objectives/Goals: | Demonstrate and compare the application of various protective covers to reduce erosion on bare soil agricultural roads; observe the effectiveness of various cover types in suppressing weeds on agricultural roads; and assess the potential for lowering agricultural road maintenance costs by reducing erosion damage and the need to apply herbicides for weed control. |
| Methods Employed: | 3 road sites with normal frequency use were selected. 12 road cover treatment options were identified as demonstration treatments using bare control, pineapple trash, sugarcane bagasse, compost, cover mulch, kikuyu or annual rye grass, crushed asphalt |
| Pollutants of Concern: | Turbidity and phosphorous |
| Watershed: | Waialua, Kiikii, Poamoho, Kaukonahua, Paukaulia, Opaeula, Helemano, Anahulu, Kawailoa, Kawaiiki, Loko Ea and Keamanea Watersheds, island of Oahu |
| Size of Project: | 1200 feet |
| Affected Water Bodies: | None mentioned in report |
| Deliverables: | Brochure of project procedures and results |
