Waimanalo Watershed: Limitations and Opportunities for Restoration 2008 HACD Conference Todd Cullison Kailua Bay Advisory ...
Outline <ul><li>Kailua Bay Advisory Council </li></ul><ul><li>Watershed issues: 303 (d) list </li></ul><ul><li>KBAC’s Wate...
Kailua Bay Advisory Council <ul><li>Formed in 1995 as a result of lawsuit </li></ul><ul><li>Resulting Consent Decree outli...
Watershed Issues <ul><li>303 (d) list for </li></ul><ul><ul><li>Nutrients </li></ul></ul><ul><ul><li>Turbidity </li></ul><...
Watershed Restoration Action Strategy <ul><li>EPA based plan, focused primarily on NPS  </li></ul><ul><li>KBAC investigate...
 
 
Habitat <ul><li>Question : Is the stream/watershed truly receiving an excess of pollutants or have significant habitat cha...
Potential Sources of NPS pollutants <ul><li>Sediment : Erosion of streambank  (NRCS, 2005), road cuts, road ditches, steep...
Waimanalo Stream- bank erosion Photo courtesy of NRCS
Limitations <ul><li>NPS:  Hard to track through watershed </li></ul><ul><li>Lack comprehensive understanding of what singl...
General Opportunities <ul><li>More data in Waimanalo Stream than most Koolaupoko moku streams (TMDLs, academia, agency res...
General Opportunities <ul><li>Work closely with NRCS, SWCD, RC&D and ag producers to implement written conservation/farm p...
Project Opportunities <ul><li>Precision Riparian Buffers—migrating, variable width butter </li></ul><ul><li>Soil, slope, l...
 
Project Opportunities, con’t <ul><li>Habitat improvement in lower section of Waimanalo Stream throughout Bellows  </li></u...
 
Project opportunities, con’t <ul><li>Ag producers are key to restoration success </li></ul><ul><li>Work with producers to ...
Next Steps <ul><li>Create opportunities and partnerships with agencies, landowners and community </li></ul><ul><li>Work wi...
Contact <ul><li>Todd Cullison </li></ul><ul><li>[email_address] </li></ul><ul><li>277-5611 p </li></ul><ul><li>262-6242 f ...
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Waimanalo Watershed: Limitations & Opportunities for Restoration

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by Mr. Todd Cullison
Executive Director, Kailua Bay Advisory Council
at the Hawaii Water Quality Conference 2008

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Waimanalo Watershed: Limitations & Opportunities for Restoration

  1. 1. Waimanalo Watershed: Limitations and Opportunities for Restoration 2008 HACD Conference Todd Cullison Kailua Bay Advisory Council
  2. 2. Outline <ul><li>Kailua Bay Advisory Council </li></ul><ul><li>Watershed issues: 303 (d) list </li></ul><ul><li>KBAC’s Watershed Action Plan </li></ul><ul><li>Limitations </li></ul><ul><li>Opportunities </li></ul><ul><li>Next steps </li></ul>Waimanalo Stream below Kalaniana'ole Hwy.
  3. 3. Kailua Bay Advisory Council <ul><li>Formed in 1995 as a result of lawsuit </li></ul><ul><li>Resulting Consent Decree outlined three program areas: </li></ul><ul><ul><li>Implementation Program </li></ul></ul><ul><ul><li>Technical Program (research) </li></ul></ul><ul><ul><li>Volunteer Water Quality Monitoring Program </li></ul></ul>
  4. 4. Watershed Issues <ul><li>303 (d) list for </li></ul><ul><ul><li>Nutrients </li></ul></ul><ul><ul><li>Turbidity </li></ul></ul><ul><ul><li>Suspended solids </li></ul></ul><ul><li>Other watershed pollutants </li></ul><ul><ul><li>Chlorofluorocarbons, pesticides, temperature, heavy metals, petroleum-based hydrocarbons and bacteria may exceed standards (HDOH, 2001) </li></ul></ul><ul><li>TMDL completed in 2001for Waimanalo Watershed </li></ul>
  5. 5. Watershed Restoration Action Strategy <ul><li>EPA based plan, focused primarily on NPS </li></ul><ul><li>KBAC investigated all 20 sub-basins in the Koolaupoko moku: Makapu'u – Kualoa, EPA Priority Watershed </li></ul><ul><li>Waimanalo, Kawa and Kaneohe have completed TMDLs </li></ul><ul><li>Other basins have more/less data </li></ul><ul><li>Restoration/BMP recommendations based on TMDLs, other research & GIS landscape analyses </li></ul>
  6. 8. Habitat <ul><li>Question : Is the stream/watershed truly receiving an excess of pollutants or have significant habitat changes altered the stream’s ability to assimilate/filter pollutants? </li></ul>Waimanalo Stream below Kalaniana'ole Hwy.
  7. 9. Potential Sources of NPS pollutants <ul><li>Sediment : Erosion of streambank (NRCS, 2005), road cuts, road ditches, steep upland erosion </li></ul><ul><li>Nutrients : animal waste and inorganic chemical fertilizers are contributors as well as antiquated cesspools (HDOH, 2001) </li></ul>
  8. 10. Waimanalo Stream- bank erosion Photo courtesy of NRCS
  9. 11. Limitations <ul><li>NPS: Hard to track through watershed </li></ul><ul><li>Lack comprehensive understanding of what single contributor is most significant (i.e. streambank erosion vs. road-cuts vs. upland erosion vs. natural background erosion) </li></ul><ul><li>Many small ag producers potentially apply fertilizers vs. a few large producers (time and effort to understand sources) </li></ul><ul><li>Limited financial/technical resources to implement Conservation Plans </li></ul><ul><li>Lack of coordination among agencies, community and organizations </li></ul><ul><li>Access to watershed </li></ul>
  10. 12. General Opportunities <ul><li>More data in Waimanalo Stream than most Koolaupoko moku streams (TMDLs, academia, agency research) </li></ul><ul><li>Conservation Plans are written via SWCD/NRCS </li></ul><ul><li>Restoration funds via federal programs (EQIP, WHIP) </li></ul><ul><li>Agencies, community groups and interested landowners addressing concerns </li></ul>
  11. 13. General Opportunities <ul><li>Work closely with NRCS, SWCD, RC&D and ag producers to implement written conservation/farm plans </li></ul><ul><li>Link grant funds with NRCS programs to help cover landowner’s share of payment </li></ul><ul><li>Create programs for community involvement (clean-ups, tree planting, educational events, etc.) </li></ul>
  12. 14. Project Opportunities <ul><li>Precision Riparian Buffers—migrating, variable width butter </li></ul><ul><li>Soil, slope, landcover </li></ul><ul><ul><li>Large landowners >1,000 acres </li></ul></ul><ul><li>Channelized, investigate, restoration and preserve </li></ul><ul><li>Based on aerial interpretation of riparian habitat/landownership </li></ul><ul><ul><li>Restore 44 acres/18 hectares </li></ul></ul><ul><ul><li>Preserve 239 acres/97 hectares (watershed) </li></ul></ul>
  13. 16. Project Opportunities, con’t <ul><li>Habitat improvement in lower section of Waimanalo Stream throughout Bellows </li></ul><ul><ul><li>Increase sinuosity of Waimanalo Stream, reconnect stream with floodplain </li></ul></ul><ul><ul><li>Freshwater and estuarine wetland restoration opportunities </li></ul></ul><ul><ul><li>Filter pollutants before entering near shore environment </li></ul></ul>
  14. 18. Project opportunities, con’t <ul><li>Ag producers are key to restoration success </li></ul><ul><li>Work with producers to implement BMPs and conservation plans on ag lands </li></ul><ul><li>Link together small landowners to monitor success or implement adaptive management of BMPs </li></ul><ul><li>Monitor to determine if cesspools are significant contributors </li></ul>
  15. 19. Next Steps <ul><li>Create opportunities and partnerships with agencies, landowners and community </li></ul><ul><li>Work with landowners/producers regarding benefits of BMPs and restoration in context of triple bottom-line: </li></ul><ul><ul><li>Economy/profits </li></ul></ul>Environment Community
  16. 20. Contact <ul><li>Todd Cullison </li></ul><ul><li>[email_address] </li></ul><ul><li>277-5611 p </li></ul><ul><li>262-6242 f </li></ul>

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