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LiDAR Hydrography Analyst

Portland, OR, USA
Description: Quantum Spatial is seeking a LiDAR Hydrography Analyst. The position will focus on the development of new hydrography delineations using high quality LiDAR-derived Digital Elevation Models (DEMs), imagery, and field collected data, which will be incorporated into the high-resolution National Hydrography Dataset (NHD) and National Watershed Boundary Dataset (WBD). The selected candidate will also perform editing of vector hydrography data and update the NHD to incorporate the LiDAR-based delineations.


Prepare LiDAR-derived DEMs (e.g., mosaicking, resampling, etc.) at the watershed or subwatershed scale for hydrography modeling
Hydro-flatten DEMs to adjust elevations where hydrographic waterbodies, areas, and double-line streams occur
Hydro-enforce DEMs where hydrography intersects roads, canals, and other anthropogenic features to ensure accurate hydrologic surface flow
Develop and execute Python scripts to model hydrography from prepared LiDAR-derived DEMs
Facilitate quality control/assessment reviews of initial delineations by hydrologists using web-based GIS applications
Adjust initial delineations and hydro-enforcements based on feedback from hydrologists.
Manage data associated with hydrographic modeling. These data include interim raster products, final hydro-flattened/enforced DEMs, breaklines, channel initiation points, etc.


Ability to effectively communicate orally and in writing
Proficiency with the ESRI ArcGIS version 10.x software suite, including the spatial analyst extension
Demonstrated programming experience with Python
Demonstrated experience managing, processing, and analyzing raster datasets to model hydrography
Familiarity with the high-resolution National Hydrographic Dataset (NHD) requirements and data standards
Understanding of basic hydrologic science principles
Experience with performing geospatial statistical analysis
Experience designing and editing geodatabases with related tables to a state or national standard
Experience producing and/or maintaining editable feature services in ArcGIS web applications
Demonstrated experience editing vector-based data in ArcGIS version 10.x software in a production environment

Preferred skills, but not required

Bachelorís degree or higher in the biological sciences, agriculture, natural resource management or related disciplines appropriate to the position.
Experience developing and maintaining web-based GIS applications.
Experience performing transactions on the National Hydrography Dataset (NHD) using the NHD update tools.
Experience in hydrography delineation from ortho-imagery.

Resumes will be accepted until all positions are filled. Immediate submissions are welcome and will be reviewed promptly. All job offers with Quantum Spatial are contingent upon passing a background check and drug screening.

How to Apply

Please upload a letter of interest, and resume with professional references in one (1) PDF via online application process.

No phone calls, please. Incomplete applications and auto-reply submissions will not be considered.

Quantum Spatial is a proud and committed Equal Employment Opportunity and Affirmative Action employer. We do not discriminate based on race, color, religion, sex, age, national origin, sexual orientation, veteran status, disability, or any other protected status.

Apply online here

Quantum Spatial


Printable version of this page Posted 2018-07-18 under Analyst

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