Nuuanu Reservoir season just opened on August 30, 2008.
If you are planning to go there to fish, it will require a freshwater game fishing license.
Freshwater Game Fishing Licenses (Resident, Non-resident, Minor, Tourist 7-day, Tourist 30-day, Senior Citizen, Duplicate) - required for any person to recreationally take any introduced fresh water game fish. Fees vary. HRS 188-50. Available for purchase online at www.ehawaii.gov/dlnr/fish/exe/fresh_main_page.cgi
Notices from the Division of Aquatic Resources
As of 9/2/08
Current Closed Seasons
Bottomfish "deep seven" April 14 through November 14
Moi closed June-August
Lobster (spiny and slipper) and Kona crab closed May-August