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Home My WebLink AboutLOMR Determination Doc. Federal Emergency Management Agency Washington, D.C. 20472 Federal Emergency Management Agency Washington, D.C. 20472 Federal Emergency Management Agency Washington, D.C. 20472 Federal Emergency Management Agency Washington, D.C. 20472 Federal Emergency Management Agency Washington, D.C. 20472 Federal Register Hawaii Tribune-Herald Table 3: Summary of Discharges – continued DRAINAGE PEAK DISCHARGES (cfs) FLOODING SOURCE AREA AND LOCATION (sq. miles)10-PERCENT2-PERCENT1-PERCENT0.2-PERCENT MOHOULI STREET DRAINAGE At 6,200 feet upstream 333 of Komohana Street0.60750 333 At Komohana Street 0.60 750 NINOLE GULCH At confluence with Ninole Gulch 21.47 6,9009,20010,800 14,800 At USGS Station 8.97 4,3006,8007,900 11,000 NRCS DIVERSION CHANNEL Point 3 (at Highway) 1.02 8381,8032,027 2,402 PALAI STREAM 1 At mouth7.7 7601,3301,550 2,220 At Puanko Street6.8 1,2751,9602,265 3,120 At Kanoelehua Avenue 5.2 1,0701,6001,860 2,530 At Golf Course near Kehaulani Street 4.9 1,0201,5251,775 2,410 333 At Maunakai Street 4.4 1,620 PALAI STREAM A At Ainaola Drive (divergence from 23323 Kupulau Ditch 218 wĻǝźƭĻķ At confluence of Palai 23323 5ğƷğ Stream C 355 PALAI STREAM A – SPLITFLOW NO. 3 At confluence with Palai 2333 Stream A 112 PALAI STREAM C At divergence from 2333 Kupulau Flood Ditch 112 2333 At Haihai Street 139 1 Discharges based on HEC-HMS results combined with linear decreasing of flows due to lava tubes 2 Computed from split flow 3 Discharges not determined REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 Table 3: Summary of Discharges – continued DRAINAGE PEAK DISCHARGES (cfs) FLOODING SOURCE AREA AND LOCATION (sq. miles)10-PERCENT2-PERCENT1-PERCENT0.2-PERCENT UNNAMED STREAM NO. 3 Point 9 (upstream of confluence with Unnamed No. 1) 0.760 371 7458841,136 UNNAMED TRIBUTARY TO 111 1,450 ALEANIO STREAM 0.87 UPPER LANIMAUMAU STREAM Point 1 (upstream of confluence with Lower Lanimaumau Strea) 0.767 6681,4551,623 1,902 Point 2 (at confluence with Lower Lanimaumau Stream) 0.816 6851,5101,6871,907 WAIAHA DRAINAGEWAY At mouth 13.53 2,7705,1907,11010,650 WAIAKEA STREAM 1,000 feet upstream of Komohana Street 35.4 2,0104,5806,230 12,000 At the confluence of Kupulau Flood Ditch 34.6 2,8405,4606,97011,600 WAIAKEA TRIBUTARY NO. 1 At confluence with 111 Waiakea Stream 0.11 355 wĻǝźƭĻķ 111 At Kawailani Street 0.01 150 5ğƷğ WAIAKEA TRIBUTARY NO. 2 At the confluence with 111 Waiakea Strem 0.28 200 a WAIAKEA TRIBUTARY NO. 3 At the confluence with 111 Waiakea Stream 0.93590 1 Discharges not determined REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 BASE FLOOD FLOODING SOURCEFLOODWAY WATER-SURFACE ELEVATION (FEET LOCAL MEAN SEA LEVEL) SECTIONMEAN WIDTHAREAVELOCITYWITHOUTWITH 1 CROSS SECTION REGULATORYINCREASE DISTANCE (FEET)(SQUARE(FEET PER FLOODWAYFLOODWAY FEET)SECOND) Waiakea Stream A 7,65024053410.1184.5184.5184.50.0 B 8,7001806369.8241.3241.3241.30.0 C 10,856639467.0325.6325.6326.10.5 D 12,1834423227.9348.4348.4348.40.0 E 13,1834022231.4372.4372.4372.50.1 F 14,7964733121.1427.1427.1427.20.1 G 15,9836843815.9455.6455.6455.60.0 H 16,8674322730.7465.9465.9465.90.0 I 17,5194531622.0501.8501.8501.80.0 J 18,5749349416.6541.5541.5542.00.5 K 19,7856540118.8571.2571.2571.40.2 L 20,9117135920.7607.0607.0607.00.0 M 21,8983741,2358.5628.4628.4629.30.9 wĻǝźƭĻķ 5ğƷğ REVISED TO 1 Feet above confluence with Waiakea Pond REFLECT LOMR EFFECTIVE: April 12, 2018 FEDERAL EMERGENCY MANAGEMENT AGENCY FLOODWAY DATA HAWAII COUNTY, HI WAIAKEA STREAM REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 AE NE ZO le rofi P y unt ii Co wa Ha ine asel B 66 551 1 Without Base Flood Elevation (BFE) Zone A,V, A99 With BFE or Depth Zone AE, AO, AH, VE, AR SPECIAL FLOOD Regulatory Floodway HAZARD AREAS ge raina et D i Stre houl Mo akea Wai 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average utary Trib depth less than one foot or with drainage Zone X. 3 No areas of less than one square mile iakea Wa AE ONE Z Y TUD OF S IMIT L E AE ON Z PUAINAKO ST EXT Future Conditions 1% Annual 21000m y utar Trib 79N Zone X Chance Flood Hazard OTHER AREAS OF E AE ZON 3A No. Area with Reduced Flood Risk due to Levee FLOOD HAZARD Zone X See Notes. AE OTHER ONE Z Area of Undetermined Flood Hazard Zone D AREAS SCALE Map Projection: NAD 1983 UTM Zone 5; Western Hemisphere; Local Mean Sea Leve 1 370. 3 7 0 .1 ofile Pr 3 1 inch = 500 feet1:6,000 6 2 . 9 iakea Wa 3 7 1 . 2 Waiakea 36 4 .9 02505001,000 e elin Bas y utar Trib Feet 3 7 Tributary No. 2 8 . 0 Meters. 3 No 365.5 3 50. 8 075150300 ZONE AE 3 8 4 . 2 NATIONAL FLOOD INSURANCE PROGRAM FLOOD INSURANCE RATE MAP 360.8 iakea Wa HAWAII COUNTY, HAWAII 362.3 line Base ofile Pr MALA KOMO y utar Trib 1% ANNUAL CHANCE DR FLOOD DISCHARGE . 3 No 390.6 PANEL 903 OF 1975 CONTAINED IN nty Cou aii Haw STRUCTURE 3 7 0 . 6 Panel Contains: 366.0 5166 15 COMMUNITYNUMBERPANELSUFFIX 37 2 .0 .4 6 39 HAWAII COUNTY1551660903F 3 9 3 . 8 Profile Baseline akea Wai 3 8 1 . 3 eam Str .2 4 40 AE NE ZO REVISED TO REFLECT LOMR AE NE ZO 412.8 403 EFFECTIVE: April 12, 2018 3 Profile Baseline 96 .0 E E A ZON .0 423 Waiakea L P O A M A L U K 4 2 2 . 0 .5 0 43 Tributary No. 1 VERSION NUMBER 19° 41' 15" 1.1.1.0 MAP NUMBER 2000m Waiakea 7 JOINS PANEL 0911 155° 05' 37.5" 433.6 80E 1551660903F Tributary No. 2 EFFECTIVE DATE ZONE AH SEPTEMBER 29, 2017 KOMOHANA ST ZONE AE REVISED AREA Hawaii County Waiakea Stream 155166 Profile Baseline . Without Base Flood Elevation (BFE) Culvert Bridge Zone A,V, A99 315.0 With BFE or Depth Zone AE, AO, AH, VE, AR FLOODING EFFECTS FROM PUAINAKO SPECIAL FLOOD 20 3 WAIAKEA STREAM Regulatory Floodway Culvert ST EXT HAZARD AREAS 323 0 0 2 E T R E T A T S T S O K A IN A U P W 0.2% Annual Chance Flood Hazard, Areas T S O K A N I A U P W of 1% annual chance flood with average depth less than one foot or with drainage ZONE AEZONE AH Zone X areas of less than one square mile (EL 345.7) Future Conditions 1% Annual 327.4 Zone X Chance Flood Hazard OTHER AREAS OF Profile Baseline Area with Reduced Flood Risk due to Levee FLOOD HAZARD Zone X See Notes. OTHER Area of Undetermined Flood Hazard Zone D ZONE AE AREAS 3 4 1 SCALE Waiakea Waiakea Tributary No. 2 Map Projection: Tributary No. 1 NAD 1983 UTM Zone 5N; Western Hemisphere; Local Mean Sea Leve 1 inch = 500 feet1:6,000 02505001,000 Feet Meters 075150300 MALANANI Hawaii County PL NATIONAL FLOOD INSURANCE PROGRAM Culvert 155166 FLOOD INSURANCE RATE MAP HAWAII COUNTY, HAWAII Profile Baseline PANEL 904 OF 1975 Panel Contains: 401 COMMUNITYNUMBERPANELSUFFIX 1% ANNUAL CHANCE HAWAII COUNTY1551660904F FLOOD DISCHARGE CONTAINED IN CULVERT 403 19° 41' 15" REVISED TO JOINS PANEL 0912 2000m 155° 05' 37.5" 81E REFLECT LOMR EFFECTIVE: April 12, 2018 VERSION NUMBER 1.1.1.0 MAP NUMBER 1551660904F EFFECTIVE DATE SEPTEMBER 29, 2017 REVISED TO REFLECT LOMR EFFECTIVE: April 12, 2018 FLOODING EFFECTS FROM WAIAKEA TRIBUTARY NO. 1 T I S N ILA A W ZONE AH KA W 440 LIMIT OF STUDY Waiakea Tributary No. 1 Hawaii County 155166 PL ILI AL H KAUNALA WAY I E L KA A L P REVISED ZONE KE A L A W L P AE AREA KAUNALA PL Without Base Flood Elevation (BFE) LANIHAU PL Zone A,V, A99 Palai Stream A ILO OO H With BFE or Depth Zone AE, AO, AH, VE, AR MONA LOOP L P LEOIKI PL SPECIAL FLOOD Regulatory Floodway KAMANELO PL HAZARD AREAS HOOMALU PL 0.2% Annual Chance Flood Hazard, Areas of 1% annual chance flood with average KAUPILI PL depth less than one foot or with drainage ZONE Zone X areas of less than one square mile AH Future Conditions 1% Annual Zone X Chance Flood Hazard OTHER AREAS OF Area with Reduced Flood Risk due to Levee FLOOD HAZARD Profile Baseline Zone X See Notes. OTHER Area of Undetermined Flood Hazard Zone D AREAS 21000m A L E ..K E EEEE 77N 400 T S SCALE Map Projection: Palai NAD 1983 UTM Zone 5N; HE A LEOMELE PL Western Hemisphere; Local Mean Sea Level T Stream S Palai Stream A T S KA A IN L 1 inch = 500 feet1:6,000 NOHOANA ST 02505001,000 ONEAWA Feet PALAKIKOPL Meters NOHOANA PL 075150300 ST ONEAWA MIKOKOIUILAMA NATIONAL FLOOD INSURANCE PROGRAM WAY ZONE AO 1% ANNUAL CHANCE FLOOD INSURANCE RATE MAP STPL (DEPTH 3) FLOOD DISCHARGE HAWAII COUNTY, HAWAII CONTAINED IN STRUCTURE Palai Stream ST I ZONE HA AI H MAUNAKAI ST AH PANEL 912 OF 1975 Palai Stream CPalai Stream Split Flow Panel Contains: ZONE AO COMMUNITYNUMBERPANELSUFFIX (DEPTH 3) HAWAII COUNTY1551660912F ZONE AO Profile Baseline AWELA (DEPTH 2) Hawaii County PL MA I KA PL 155166 REVISED TO REFLECT LOMR ZONE AO EFFECTIVE: April 12, 2018 (DEPTH 1) T S EA IK A K Profile Baseline VERSION NUMBER ZONE AE 1.1.1.0 MAP NUMBER 1551660912F EFFECTIVE DATE L P O L A KA SEPTEMBER 29, 2017