Overview:

SWCA conducted biological characterizations of Honokohau and nearby Honolua Streams in northwest Maui to assess the pros and cons to the streams and their respective embayments of supplemental flow releases below two century-old diversion weirs. An annual program was established to monitor the population biology of native amphidromous species in Honokohau Stream following release of continuous flow below an existing diversion dam. In a companion study, SWCA developed recommendations for formal interim instream flow standards for both Honokohau and Honolua Streams for presentation to the state Commission on Water Resources Management.

Services Provided:

• Conducted baseline aquatic surveys of Honokohau and Honolua Streams
  
• Conducted annual monitoring of streams following release of flow below dams
  
• Recommended evised Interim Instream Flow Standards

Results:
SWCA’s efforts enabled the client to meet their State Land Use Commission permitting requirements for proposed upland developments, and will be considered by the Hawaii Commission on Water Resources Management in setting instream flow standards for the two streams.