.. _gen_huc_mapping:

Mapping Grid to HUC
^^^^^^^^^^^^^^^^^^

USGS Hydrologic unit codes have been mapped to the CONUS1 and CONUS2 grids. This mapping generally respects the boundaries provided in the USGS shape files however small adjustments were made to ensure that the watershed boundaries align with topographic boundaries in the CONUS1 and CONUS2 domains.  This dataset contains mappings for ... 


**Dataset Name**: huc_mapping

**Data Collection or Processing Notes:**

    ....

    

**Extent and Resolution**:

* Available Date Range: 

* Grid: conus2

  - Spacial Resolution:  1000 meters

  - XY Grid Spacial Extent:  4442 x 3256

  - LatLon Spacial Exent:  -126.88755692881833, 21.8170599154073,  -64.7677149695924, 53.20274381640737

  - Origin (meters): -2208000.30881173, -1668999.65483222

  - Projection: +proj=lcc +lat_1=30 +lat_2=60 +lon_0=-97.0 +lat_0=40.0000076294444 +a=6370000.0 +b=6370000

* Grid: conus1

  - Spacial Resolution:  1000 meters

  - XY Grid Spacial Extent:  3342 x 1888

  - LatLon Spacial Exent:  -121.47939483437318, 31.651836025255015,  -76.09875469594509, 50.49802132270979

  - Origin (meters): -1885055.4995, -604957.0654

  - Projection: +proj=lcc +lat_1=33 +lat_2=45 +lon_0=-96.0 +lat_0=39 +a=6378137.0 +b=6356752.31

Variables
^^^^^^^^^^^^^^^^^^

This describes the available variables of the dataset.
Use the dataset, variables and temporal_resolution in python access functions as described in the Working with Gridded Data, and Working with Point Observations.

.. list-table:: Topography Variables
    :widths: 25 60 30 20 20 20
    :header-rows: 1

    * - variable
      - description
      - temporal_resolution
      - units
      - grid
      - 3D
    * - huc_map
      - Map of points to huc id
      - static
      - unitless
      - conus2, conus1
      - no