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AK Hydro Manual

Southcentral & Southeast Alaska Hydrography Databases

Standard Operations Manual

Prepared By

Mike Plivelich






As required

Release Date

March 2013

Purpose of the document

The purpose of this document is to provide a standardized set of procedures for the operation and administration of the Southcentral and Southeast Alaska Hydrography Databases.  This document is a living document, in so much that as processes relating to the Southcentral and Southeast Alaska Hydrography Databases are refined or modified, this document should be updated to reflect those changes.


The Southcentral Alaska Hydrography Database (SCAK Hydro) and the Southeast Alaska Hydrography Database (SEAK Hydro) were founded on the need to reconcile local hydrography related datasets across natural resource management agencies within Southcentral and Southeast Alaska, as well as synchronize those geometries to the National Hydrography Dataset (NHD).  This project, branded as "AK Hydro" in 2013, is a collaborative effort between the USDA Forest Service (USFS), Alaska Department of Fish & Game (ADF&G), US Fish & Wildlife Service, US Geological Survey, Kenai Watershed Forum (KWF) and University of Alaska Southeast (UAS).  Each agency recognizes the need for a single source authoritative hydrography dataset capable of meeting local business needs, as well as the need to contribute to the improvement of the National Spatial Data Infrastructure[1] (NSDI) through the NHD.

In contrast to other regions of the U.S., unification and stewardship of hydrographic geospatial data in Alaska has remained unresolved. Consequently, agencies in Alaska regularly use and maintain their own agency-specific hydrographic datasets which address their respective requirements.  This situation has resulted in multiple hydrographic datasets across similar extents with conflicting spatial geometries and attributes.  AK Hydro resolves these issues by 1) distilling and fusing the hydrography data business needs of key local natural resource management agencies; 2) developing a scalable infrastructure that is collaboratively maintained and widely accessible; 3) implementing a workflow that integrates with existing business practices; and 4) satisfying NSDI requirements through the stewardship of NHD in southeast Alaska.

[1] The National Spatial Data Infrastructure is defined as the technologies, policies, and people necessary to promote sharing of geospatial data throughout all levels of government, the private and non-profit sectors, and the academic community. The National Spatial Data Infrastructure was established by Executive Order 12906 on April 11th, 1994.

  1. Introduction
  2. SEAK Hydro Operational Roles
  3. SEAK Hydro Operational Calendar
  4. Connecting to SEAK Hydro transactional data for ADF&G Desktop Editors
  5. Connecting to SEAK Hydro transactional data for USFS Desktop Editors
  6. Communicating Editing Intent and Preparing for Data Checkout
  7. Creating a check-out replica of SEAK Hydro for ADF&G Desktop Editors
  8. Creating a check-out replica of SEAK Hydro for USFS Desktop Editors
  9. Editing SEAK Hydro Data
  10. Data Steward peer review – check-in approval process
  11. Synchronizing a check-out replica (checking-in) for ADF&G Desktop Editors
  12. Synchronizing a check-out replica (checking-in) for USFS Desktop Editors
  13. Deploying a two-way replica of SEAK Hydro at the Sitka Supervisor’s Office
  14. Repairing SEAK Hydro network directionality
  15. Synchronizing a USFS two-way replica with SEAK Hydro at UAS
  16. Deploying a one-way replica of SEAK Hydro at the Sitka Supervisor’s Office
  17. Synchronizing a USFS one-way replica with SEAK Hydro at UAS
  18. Posting and Reconciling SEAK Hydro at UAS
  19. Transforming SEAK Hydro data into NHD Conflation ready data
  20. Updating the NHD via Conflation with content from SEAK Hydro
  21. List of SEAK Hydro Contacts and Context