REEF uses a hierarchical 8-digit code system for survey site locations. Each geographic area has its own set of codes. When completing a survey, you need to know the complete 8-digit code for the site you surveyed.

If the site that you surveyed is not currently on our list, then please email to request a new code to be assigned. Please provide the site name, general location, and ideally the latitude and longitude.

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Region: HAW
Zone: Oahu

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ZoneZone Code listGeographic ReportNameHave Coordinates?
31Zone Code listGeographic ReportLeeward Side Oahu (Kaena Pt. - Diamond Head)
3101Zone Code listGeographic ReportWaianae Coast (Kaena Pt. - Barbers Pt.)
31010001Geographic ReportMakaha CavernsYes
31010002Geographic ReportThe MahiNo
31010003Geographic ReportKahe Point Beach Park (Electric Beach)Yes
31010004Geographic ReportLand of OzYes
31010005Geographic ReportKea'Au CornerYes
31010006Geographic ReportKo'olina LagoonsYes
31010007Geographic ReportAirplane Canyon / Airplane ReefYes
31010008Geographic ReportStarsNo
31010009Geographic ReportDeep LCUYes
31010010Geographic ReportLanikuhonua (between Marriott and Paradise Cove Luau)Yes
31010011Geographic ReportSouthend YokahamaYes
31010012Geographic ReportTurtle Cleaning RockNo
31010013Geographic ReportMakua BeachYes
31010019Geographic ReportUlua CavernNo
31010020Geographic ReportPapio PassNo
31010021Geographic ReportGene PoolNo
31010022Geographic Report2 Minutes OutNo
31010023Geographic ReportShallow LCUYes
31010024Geographic ReportTwin Caves / Twin Holes (Waianae)Yes
31010025Geographic Report29 DownYes
3102Zone Code listGeographic ReportMamala Bay (Barbers Pt. - Diamond Head)
31020001Geographic ReportKewalo PipeYes
31020002Geographic ReportMagic Island/Rainbow Reef, outside lagoon, channel sideYes
31020003Geographic ReportYO-257/San PedroYes
31020004Geographic ReportSea Tiger WreckYes
31020005Geographic ReportKaiser ReefYes
31020006Geographic ReportNautilusNo
31020007Geographic ReportPinnaclesNo
31020008Geographic ReportPearl Harbor WallNo
31020009Geographic ReportWaikiki GroinYes
31020010Geographic ReportHilton Hawaiian's ChannelYes
31020011Geographic ReportAla Moana Beach ParkYes
31020012Geographic ReportMagic Island LagoonYes
31020013Geographic ReportKakaako Waterfront ParkYes
31020014Geographic ReportSand Island, Beach (Sand Island )No
31020015Geographic ReportQueen's Surf Beach (W of San Souchi Beach, E of Kuhio Beach)No
31020016Geographic ReportWaikiki MLCD Ewa (West) between groinsYes
31020017Geographic ReportWaikiki MLCD Diamond Head (East) between groin and NatatoriumYes
31020018Geographic ReportKaimana FMAYes
31020019Geographic ReportKuhio Beach near Royal Hawaiian HotelYes
31020020Geographic ReportOuter Reef MLCDYes
31020021Geographic ReportMagic Island (Center outside reef)Yes
31020022Geographic ReportTongg's - FMAYes
31020023Geographic ReportShorebird Hotel Channel (near Saratoga St.)Yes
31020024Geographic ReportNavy Tug / Nashua YTB-774Yes
31020025Geographic ReportMario World / Ke'ehi PipeNo
31020026Geographic ReportHorseshoe Reef / SecretsNo
32Zone Code listGeographic ReportSouth Coast Oahu (E. of Diamond Head - Makapuu Pt.)
32000001Geographic ReportDiamond HeadYes
3201Zone Code listGeographic ReportMaunalua Bay
32010001Geographic ReportTurtle CanyonYes
32010002Geographic ReportThe Corsair WreckYes
32010003Geographic ReportHawai'i Loa CraterYes
32010004Geographic ReportWaialae Beach ParkYes
32010005Geographic ReportAngler's Reef / Angler Fish ReefYes
32010006Geographic ReportKoko CraterYes
32010007Geographic ReportKahala at Hunakai StreetYes
32010008Geographic ReportBaby BargeYes
32010009Geographic ReportFantasea ReefYes
32010010Geographic ReportSpitting CavesNo
32010011Geographic ReportKaalawai (Kahala)Yes
32010012Geographic ReportKahala at Kala PlaceYes
32010013Geographic ReportLanding Craft / LCU WreckYes
32010014Geographic ReportCorner PocketsNo
3202Zone Code listGeographic ReportKawaihoa Pt. - Makapuu Pt. (incl. Hanauma Bay)
32020001Geographic ReportInside Reef Hanauma BayNo
32020002Geographic ReportOutside Reef Hanauma BayYes
32020003Geographic ReportWitch's Brew Hanauma BayNo
32020004Geographic ReportPalea (outside Hanauma Bay)Yes
32020005Geographic ReportLanai LookoutYes
32020006Geographic ReportKoko Head Sea CoveYes
32020007Geographic ReportKoko Head Drift DiveYes
32020008Geographic ReportHanola Blow Hole / From Here To EternityNo
32020009Geographic ReportLST Wreck (Landing Ship Tank - Hawaii Kai)No
33Zone Code listGeographic ReportWindward Side Oahu (Makapuu Pt. - Kahuku Pt.)
3301Zone Code listGeographic ReportKaneohe Bay (Makapuu Pt. - Kualoa Pt.)
33010001Geographic ReportManana IslandNo
33010002Geographic ReportMoku ManuNo
33010003Geographic ReportCoconut IslandNo
33010004Geographic ReportLanikai at Kaiolena Dr.Yes
33010005Geographic ReportPlease use 32010005 (was Angler's Reef)No
33010006Geographic ReportHeela State ParkYes
33010007Geographic ReportKailua Beach Park (Popola Island)No
33010008Geographic ReportMakai PierYes
33010009Geographic ReportKaiona Beach ParkYes
33010010Geographic ReportKaneohe Bay (intersection of Kamehameha and Lulani)Yes
33010011Geographic ReportOfficer Beach / North BeachYes
33010012Geographic ReportFishpond Makaha 1Yes
33010013Geographic ReportFishpond Makaha 2Yes
33010014Geographic ReportFishpond Makaha 3Yes
33010015Geographic ReportKaneohe Bay SandbarYes
3302Zone Code listGeographic ReportKualoa Pt. - Kahuku Pt.
33020001Geographic ReportKokololio Beach ParkYes
33020002Geographic ReportLa'ie BayYes
33020003Geographic ReportGoat IslandYes
34Zone Code listGeographic ReportNorth Shore Oahu (W. of Kahuku Pt. - Kaena Pt.)
3401Zone Code listGeographic ReportKahuku Pt. - Puaena Pt. (north end of Waialua Bay)
34010001Geographic ReportShark's CoveYes
34010002Geographic ReportThree TablesYes
34010003Geographic ReportHaleiwa TrenchYes
34010004Geographic ReportHaleiwa Beach Co. Park - Use 34020002Yes
34010005Geographic ReportLaniakea BeachNo
34010006Geographic ReportCar WashYes
34010007Geographic ReportAtlantisYes
34010008Geographic ReportKawailoa Beach Park EastYes
34010009Geographic ReportShark Cove Pupukea - Use 34010001Yes
34010010Geographic ReportWaimea BayYes
34010011Geographic ReportKuilima Bay (by Turtle Bay Resort)Yes
34010012Geographic ReportChun's ReefYes
34010013Geographic ReportSunset BeachYes
3402Zone Code listGeographic ReportWaialua Bay - Kaena Pt.
34020001Geographic ReportKaena State ParkYes
34020002Geographic ReportHaleiwa Beach County ParkYes
34020003Geographic ReportCamp MokuleiaYes
34020004Geographic ReportHaleiwa Ali'i Beach ParkYes