OMB control number
Hydrography Maintenance Portal (HMP)
OMB 1028-0143 · DOI/GS.
OMB 1028-0143
The Hydrography Maintenance Portal (HMP) is a website used by editors to ‘check out’ hydrography data from the National Hydrography Dataset (NHD). Editors can update the checked out data using a geographic information system (GIS), and subsequently check the data back into the official version of the NHD managed at the USGS after editing.
The latest form for Hydrography Maintenance Portal (HMP) expires 2027-04-30 and can be found here.
Latest Forms, Documents, and Supporting Material
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All Historical Document Collections
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Approved without change |
Existing collection in use without an OMB Control Number | 2021-09-08 |