Displays the boundaries of anchorage zones and non-anchorage zones for the State of Hawaii as recorded on NOAA nautical charts. These are offshore areas outside of harbors where ships and boats can lie at anchor; many offer natural shelter from the effects of storms. Some anchorage zones have usage restrictions while others are prohibited entirely. These are indicated herein by polygon color. See also the associated "Anchorages - Hawaii" layer for related point locations.

This database shows the location of publicly owned treatment works, and other significant point source discharges to surface waters at or near the contiguous U.S. coastline. Three types of features are provided in this database; facility location, outfall pipes, and the outfall discharge point. Outfall pipes and discharge points may not be present for some facilities due to a lack of source data. A facility can be linked to its outfall pipe, discharge point and other National Pollution Discharge Elimination System records using the provided key field.

These data show the location of available and discontinued ocean disposal sites within U.S. waters. Contemporary ocean disposal sites generally accept clean dredged material (sediment) collected during navigation channel improvement projects. These projects are sponsored and-or regulated by federal and state agencies. The terminology and practices used in ocean disposal have changed considerably over time. The values in the Primary Use field in this database show some of that variability.

Boundary of the marine portion of the Ahihi-Kinau Natural Area Reserve. The statewide Natural Area Reserves System (NARS) was established to preserve areas that support communities of the natural flora and fauna of Hawaii and is administered by Hawaii's Division of Forestry and Wildlife (DOFAW). Located off the southwest coast of Maui, Ahihi-Kinau was the first designated reserve in 1973. Unlike other NARs, it includes a marine component. The surrounding coral reef systems shelter a complex assemblage of organisms, most of them endemic to the Hawaiian archipelago. For further information, please see: http://dlnr.hawaii.gov/ecosystems/nars/maui/ahihi-kinau/

Island elevation data use in publication by Baker JD, Littnan CL, Johnston DW. "2006. Potential effects of sea level rise on the terrestrial habitats of endangered and endemic megafauna in the Northwestern Hawaiian Islands. Endangered Species Research 4(1): 1-10."

This feature class contains integrated location, identification, and permit and discharge monitoring information from the EPA Facility Registry Service (FRS) for the subset of facilities that link to the Permit Compliance System (PCS)for a subset of for coastal facilities permitted under the National Pollutant Discharge Elimination System (NPDES) module of the Integrated Compliance Information System (ICIS). Coastal proximity was determined by selecting facilities located within 20 miles of submerged areas established in the Submerged Lands Act (SLA, 43 U.S.C. sect. 1301 et seq.), 48 U.S.C. sect. 1705, or that overlapped the Exclusive Economic Zone (EEZ) for facilities in regions outside the SLA. The Facility Registry Service (FRS) identifies and geospatially locates facilities, sites or places subject to environmental regulations or of environmental interest. PCS tracks NPDES surface water permits issued under the Clean Water Act. Under NPDES, all facilities that discharge pollutants from any point source into waters of the United States are required to obtain a permit. The permit will likely contain limits on what can be discharged, impose monitoring and reporting requirements, and include other provisions to ensure that the discharge does not adversely affect water quality. Using vigorous verification and data management procedures, FRS integrates facility data from EPA's national program systems, other federal agencies, and State and tribal master facility records and provides EPA with a centrally managed, single source of comprehensive and authoritative information on facilities.