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MODFLOW-2005 and SWI2 models for assessing groundwater and surface-water interactions in the Heeia Watershed, Oahu, Hawaii Resource managers and users seek information that can be used to balance the needs of competing uses of groundwater and streamflow in the Heeia watershed, Oahu. A previously constructed steady-state numerical groundwater-flow model for the island of Oahu, Hawaii (https://doi.org/10.3133/sir20205126) using MODFLOW-2005 with the Seawater Intrusion (SWI2) package was used to examine the effects of withdrawals in the watershed. Four simulations representing a baseline and various withdrawal conditions were run using the previously published numerical model. The baseline simulation represents conditions in 2001-10 which were used to calibrate the Oahu model and to which all other scenarios are compared. The three scenarios... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Groundwater Model, Hawaiian Islands, Hydrology, MODFLOW-2005, Oahu, All tags... SWI2, USGS Science Data Catalog (SDC), Water Resources, environment, geoscientificInformation, groundwater, groundwater and surface-water interaction, groundwater discharge to ocean, groundwater flow, inlandWaters, saltwater intrusion, usgsgroundwatermodel, Fewer tags Core descriptions and sand bed thickness data from Kahana Valley, O'ahu, Hawai'i This portion of the data release contains information on cores that were collected by the U.S. Geological Survey in Kahana Valley, O'ahu, Hawaii in 2015 and 2017. Sites were cored in order to describe wetland stratigraphy and to identify potential tsunami deposits. These cores contain mud, peat, fluvial sands, and marine carbonate sands, reflecting deposition in a variety of coastal environments. PDF files describe twenty-four (24) gouge and ‘Russian’ cores (hand held, side-filling peat augers) that were collected and described in the field. Cores collected in 2017 were described using the Troels-Smith sediment classification scheme (Troels-Smith, 1955; Nelson, 2015). Another pdf file (Kahana_cores_legend.pdf) contains... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Hawaiian Islands, Kahana Valley, Nonliving resources, All tags... O'ahu, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Physical/Chemical Features, State of Hawai'i, Substrate, U.S. Geological Survey, USGS, core analysis, geoscientificInformation, sediment, tsunamis, Fewer tags Vibracore photographs, computed tomography scans, and core-log descriptions from Pololu Valley, Island of Hawaii This portion of the data release contains information on vibracores that were collected by the U.S. Geological Survey in Pololu Valley, Island of Hawai'i in 2014. Five sites were cored in order to describe wetland stratigraphy and to identify potential tsunami deposits. These vibracores contain mud, peat, fluvial sands, and marine volcanic sands, reflecting deposition in a variety of coastal environments. Two (2) pdf files (VC1.pdf, VC2.pdf) describe vibracores that were split, imaged by a line-scanner camera, scanned to generate computed tomagraphic (CT) images, and visually described. A detailed description of the upper 150 cm of VC1 using the Troels-Smith sediment classification scheme (Troels-Smith, 1955; Nelson,... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Hawaiian Islands, Island of Hawai'i, Nonliving resources, All tags... PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Physical/Chemical Features, Pololu Valley, State of Hawai'i, Substrate, U.S. Geological Survey, USGS, core analysis, geoscientificInformation, sediment, tsunamis, Fewer tags MODFLOW-2005 and SWI2 models for assessing groundwater availability scenarios in volcanic aquifers on Kauai, Oahu, and Maui, Hawaii Previously constructed steady-state numerical groundwater-flow models for the islands of Kauai, Oahu, and Maui, Hawaii (https://doi.org/10.3133/sir20205126) using MODFLOW-2005 with the Seawater Intrusion (SWI2) package, were used to examine the consequences of historical and plausible future withdrawals and changes in recharge. The volcanic aquifers of the Hawaiian Islands supply water to 1.46 million residents, diverse industries, and a large component of the U.S. military in the Pacific. Groundwater also supplies freshwater that supports ecosystems in streams and near the coast. Hawaii’s aquifers are remarkable given their small size, but the islands’ capacity to store fresh groundwater is limited because each... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Groundwater Model, Hawaiian Islands, Hydrology, Kauai, MODFLOW-2005, All tags... Maui, Oahu, SWI2, USGS Science Data Catalog (SDC), effects of climate change, environment, geoscientificInformation, groundwater, groundwater and surface-water interaction, groundwater discharge to ocean, groundwater flow, inlandWaters, saltwater intrusion, usgsgroundwatermodel, Fewer tags Pacific Island Ecosystems Research Center Research at the Pacific Island Ecosystems Research Center focuses on providing the scientific understanding and technologies needed to support and implement sound management and conservation of our Nation's biological resources occurring in Hawai'i and other Pacific island locations. Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Bats, Birds, Hawaiian Islands, Invasive species, Invertebrate species, All tags... Mapping, Pacific Islands, Plants, Restoration, Vegetation, terrestrial ecosystems, Fewer tags Vibracore photographs, computed tomography scans, and core-log descriptions from Anahola Valley, Kaua'i, Hawai'i This portion of the data release contains information on vibracores that were collected by the U.S. Geological Survey in Anahola Valley, Kaua'i, Hawai'i in 2015. Sites were cored in order to identify potential tsunami deposits and describe wetland stratigraphy. These vibracores contain mud, peat, volcanic sands, and carbonate sands, reflecting deposition in a variety of coastal environments. PDF files describe eight (8) vibracores that were split, imaged by a line-scanner camera, scanned to generate computed tomagraphic (CT) images, and visually described. Another pdf file (Anahola_cores_legend.pdf) contains a core-log legend. A comma-delimited text file (Anahola_sand_thickness.csv) includes tabulated information... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Anahola Valley, CMHRP, Coastal and Marine Hazards and Resources Program, Hawaiian Islands, Kaua'i, All tags... Nonliving resources, PCMSC, Pacific Coastal and Marine Science Center, Physical Habitats and Geomorphology, Physical/Chemical Features, State of Hawai'i, Substrate, U.S. Geological Survey, USGS, core analysis, geoscientificInformation, sediment, tsunamis, Fewer tags Fossil corals from Midway Atoll, Midway Islands, Hawaiian Islands. 1965. Album caption: Figure 1. Favia sp. A (p. G6). Mold X1. Reef hole, 1,061-1,066 ft. USNM 62386. Figure 2. Favia sp. B (p. G6). Calicees, X1. Reef hole, 915-916 ft. USNM 62382. Figure 3. Favites sp. cf. F. chinensis (Verrill) (p. G6). Mold, X1. Reef hole, 915-916 ft. USnm 62387. Figure 4. Favia sp. C (p. G6). Transverse section, X1. Reef hold, 590-595 ft. USNM 62373. Figure 5, 6. Galaxes haligena Felix (p. G6). 5. Transverse section, X1. Reef hole, 494 ft. USNM 62385. 6. Vertical section, X1. Reef hole, 494 ft. USNM 62385. Index card: Wells, J.W. 96-98 – Geology of the Midway area, Hawaiian Islands: Fossil Corals... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Hawaiian Islands, Midway Atoll, Midway Islands, Photographers, Wells, J.W. Collection, All tags... photo print, Fewer tags Fossil corals from Midway Atoll, Midway Islands, Hawaiian Islands. 1965. Album caption: Figures 1-6. Stylophora pistillata (Esper) (p.G3). 1. Latex cast, X1. Reef hole, 990-993 ft. USNM 62375. 2, 3. Ecomorph mordax, X10, X1. Reef hole 638 ft. USNM 62377. 4, 5. Ecomorph mordax, X1, X5, Reef hole, 699 ft. USNM 62378. 6. Ecomorph mordax, mold, X1. Reef hole, 701 ft. USNM 62376. 7-9. Sytlophora gemmans. Gerth (p. G4). 7. Mold, X1. Reef hole, 671-676 ft. USNM 62380. 8, 9. Latex case, X1, X5. Reef hole 970-971 ft. USNM 62379. Geology of the Midway area, Hawaiian Idlands: Fossil Corals from Midway Atoll. Midway Islands. 1965. Published as Plate 1 in U.S. Geological Survey Professional Paper 680-G, Fossil corals from Midway atoll. 1982. Index card: Wells, J.W. 96-98... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Hawaiian Islands, Midway Atoll, Midway Islands, Photographers, Wells, J.W. Collection, All tags... photo print, Fewer tags Projected flood extent polygons and flood depth points based on 10-, 50-, 100-, and 500-year wave-energy return periods, with and without coral reefs, for the State of Hawaii (the islands of Hawaii, Kahoolawe, Kauai, Lanai, Maui, Molokai, Niihau, and Oahu) This part of the data release presents projected flooding extent polygon (flood masks) and flooding depth points (flood points) shapefiles based on wave-driven total water levels for the State of Hawaii (the islands of Hawaii, Kahoolawe, Kauai, Lanai, Maui, Molokai, Niihau, and Oahu). For each island there are 8 associated flood mask and flood depth shapefiles: one for each of four nearshore wave energy return periods (rp; 10-, 50-, 100-, and 500-years) and both with (wrf) and without (worf) the presence of coral reefs. Flooding depth point data are also presented as a comma-separated value (.csv) text file. Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CMHRP, Coastal and Marine Hazards and Resources Program, Coral Reef, Habitat, Hawaiian Islands, All tags... Island of Hawaii, Island of Hawai�i, Kahoolawe, Kaho�olawe, Kauai, Kaua�i, Lanai, Lana�i, Maui, Molokai, Moloka�i, Niihau, Ni�ihau, Oahu, O�ahu, PCMSC, Pacific Coastal and Marine Science Center, State of Hawaii, U.S. Geological Survey, USGS, United States of America, coastal processes, coral reef communities, environment, flooding, geoscientificInformation, oceans, reef, reef ecosystems, Fewer tags Fossil corals from Midway Atoll, Midway Islands, Hawaiian Islands. 1965. Album caption: Figures 1,2. Seriatopora sp. cf. S. hystrix. Dana (p. G4) 1. Latex cast, X1. Reef hole, 958-959 ft. USNM 62381. 2. Latex cast, X1. Reef hole, 963-964 ft. USNM 62390. Figures 3, 4. Pocillopora sp. cf. P. hemprichi Ehrenberg (p. G5). X1, X5. Reef hole 631-636 ft. USNM 62388. Figures 5, 6. Acropora sp. (p. G5). 5. Latex cast, X4. Reef hole, 901-906 ft. USNM 62389. 6. Mold, X4. Reef hole, 946-951 ft. USNM 62384. Figure 7. Plesiastrea sp. cf. P. curta (Dana) (p. G6). Transverse section, X1. Reef hole, 754.7 ft. USNM 62374. Figure 8. Plesiastrea curta (Dana) (p. G6). Transverse section, X1. Holocene,... Categories: Image; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Hawaiian Islands, Midway Atoll, Midway Islands, Photographers, Wells, J.W. Collection, All tags... photo print, Fewer tags