FY27_DCA_3DHP-E_-_3DHP_Data_Validation_Timeline_1.pdf
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This document is an estimated timeline guideline for the US Geological Survey (USGS) 3D Hydrography Program (3DHP) data validation process following delivery of elevation-derived hydrography data by data providers or partners.
The validation process begins after a work unit is delivered and confirmed to be in proper format. The initial review takes up to 90 days, after which the USGS submits feedback to its point of contact for communication to the data provider. Data providers have 60 days to submit corrections if requested, followed by a 30-day USGS review period for corrected deliverables. If additional corrections are needed, the cycle repeats. Work units may be delivered in staggered deliveries, allowing for multiple deliveries comprising one overall project. Once a work unit passes validation, the elevation-derived hydrography data is ingested into the 3DHP dataset and published on The National Map through quarterly web feature service updates. Static versions of 3DHP are made available for annual download. The document emphasizes that actual timelines and the number of correction cycles may vary by project, and provides a detailed timeline illustration showing an example project with three staggered deliveries broken into five work units with varying correction cycles before full project completion and publication to The National Map.
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US Geological Survey 3D National Topography Model Data Collaboration Announcement
3D Hydrography Program
FY27 3DHP-E: Estimated Timeline for 3DHP Data Validation Page 1
3DHP-E: Estimated Timeline for 3DHP Data Validation
The following is an estimated timeline of the data validation process after data is delivered to the USGS. Data will not be accepted by 3DHP until it has passed validation. This document is a guideline only and actual dates may vary.
Larger projects may be broken into smaller blocks each known as a “work unit”. These work units are delivered to USGS by the data provider often in staggered deliveries with one or more work units in each delivery. Some projects may be small enough to be delivered as one work unit. The USGS reviews each work unit individually.
After a work unit is delivered to the USGS it is assessed to ensure the data were delivered in the proper format. Following confirmation of proper data formatting, the validation process will begin. The initial review process can take up to ninety (90) days after the work unit is delivered to USGS. Feedback is submitted to the USGS point of contact who communicates it back to the partner and/or data provider. Data providers have sixty (60) days to provide data corrections if requested. USGS has thirty (30) days to complete the review of the corrected deliverables. If the data still require corrections after evaluation, the correction cycle will be repeated.
As soon as a work unit has been validated, the Elevation Derived Hydrography (EDH) is ready for ingestion into the 3DHP dataset and publication on The National Map. This process of validation and ingestion/publication is repeated for each work unit that comprises the entire project. Validated and ingested data will be available through The National Map 3DHP services at the next scheduled quarterly update. Static versions of 3DHP will be made available for download annually. The figure below illustrates the estimated timeline of a project from delivery to the USGS through publication on The National Map
US Geological Survey 3D National Topography Model Data Collaboration Announcement
3D Hydrography Program
FY27 3DHP-E: Estimated Timeline for 3DHP Data Validation Page 2
Delivery 1
Work Unit 1
Initial
Review 90 days
Corrections
Requested 60 days
Review
Corrections 30 days
Corrections
Requested 60 days
Review
Corrections 30 days
EDH Ingested to
3DHP
Published Quarterly via Web Feature
Service
All Data
Published to
National Map
Work Unit 2
Initial
Review 90 days
Corrections
Requested 60 days
Review
Corrections 30 days
Corrections
Requested 60 days
Review
Corrections 30 days
EDH Ingested to
3DHP
Published Quarterly via Web Feature
Service
Delivery 2 Work Unit 3
Initial
Review 90 days
Corrections
Requested 60 days
Review
Corrections 30 days
EDH Ingested to
3DHP
Published Quarterly via Web Feature
Service
Delivery 3
Work Unit 4 Initial Review
90 days
EDH Ingested to
3DHP
Published Quarterly
Work Unit 5 Initial Review
90 days
Corrections
Requested 60 days
Review
Corrections 30 days
EDH Ingested to
3DHP
Published Quarterly
Color Key USGS - Data Validation Data Provider USGS - Data Publication Full Project Completion
Figure 1: Estimated timeline of a project from delivery to the USGS through publication on The
National Map. This example has 3 staggered deliveries broken up into 5 work units. Data may go through a series of correction cycles before validation is complete. This is an example for illustration purposes only. The actual time and number of corrections cycles for a project to be validated and published on The National Map may vary.
Data PublicationTimeData Delivery
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