HF014
Experimental watershed boundaries and gaging station locations, Andrews Experimental Forest, 2011

PRINCIPAL INVESTIGATOR(S): Sherri L. Johnson

ORIGINATOR(S): George W. Lienkaemper

OTHER RESEARCHER(S): Julia A. Jones

DATA SET CONTACT PERSON: Theresa J. Valentine

METADATA CONTACT: Theresa J. Valentine

DISTRIBUTOR: Theresa J. Valentine

METADATA CREATION DATE:

16 Jan 2004

MOST RECENT METADATA REVIEW DATE:

28 Feb 2014

KEYWORDS:

Disturbance, Organic matter, hydrology, disturbance, streamflow, modeling, water, watersheds, streams, long term studies

PURPOSE:

The purpose of this dataset is to provide basic location information for use with the hydrology and small watershed studies. This data can also be used to generate a hydrological model for the HJ Andrews.

METHODS:

Processing Procedures - HF014:

Description: HF01401: Experimental Watershed Boundaries, Watersheds 1, 6, 7, and 9 were extracted from the Willamette Natl For vegetation coverage. 2, 3, and 8, were digitized using DEM contours. Watershed 9 and 10 were added from the gaged watershed coverage. The gaged watershed lines were removed to show the complete watershed boundaries.

Processing Procedures - HF014 (1):

Description: HF01402: Gaged Watersheds, Watersheds 1, 6, 7, and 9 were extracted from the Willamette Natl For vegetation coverage. 2, 3, and 8, were digitized using DEM contours. Watershed 9 and 10 were added from the gaged watershed coverage.

Processing Procedures - HF014 (2):

Description: HF01403: Stream Gage Stations. Data was collected by GPS. Documentation is available with data in gpspoints. The data was reselected from the larger gpspoints dataset by specific sitecodes. Points were adjusted to match the stream network (on-screen digitizing) Original GPS points are available at /data/cascade/hja27/strgage_old.

Instrumentation: GPS 2002

Processing Procedures - HF014 (3):

Description:

HF01404: 10 meter DEM Watershed Boundaries: A lattice was generated using the 10 meter DEM of the HJ Andrews and surrounding area. The sinks were filled on the lattice, and a flow direction grid was generated. A flow accumulation grid was also generated. The flow accumulation grid was used to adjust the gps locations of the gaging stations to cells where they would draw the watershed correctly. The gaging stations were converted to a grid layer, and snappour was used. The grid watershed command was used to create the watershed boundaries. There were problems with watersheds 8, 9, and 10. Adjustments were made to watershed 8 gaging station to get a better deliniation of the watershed. It was decided to use the existing boundary for watershed 9 as the 10 meter DEM representation was not working (it appears to be due to errors in the DEM). Watershed 10 was drawn too large, so the old southern boundary was used with the 10 meter DEM boundaries to make a better representation. The data was converted to a polygon coverage (from a grid), cleaned up, and attributes were added.

Commands used: SWSHED5 = watershed(flow102,junk1) FLOW102 = flowdirection(fill10b) Z00FILL10ZF2 = 3150.600097656 - fill10b RENAME z00fill10zf2 fill10b pointgrid strgage1 ../junk1 strgage1#

added area field using the calculate area command

TAXONOMIC SYSTEM:

None

GEOGRAPHIC EXTENT:

Andrews Experimental Forest within the Willamette National Forest, western Cascades, Oregon, USA.

ELEVATION_MINIMUM (meters):

ELEVATION_MAXIMUM (meters):

PROGRESS DESCRIPTION:

Complete

UPDATE FREQUENCY DESCRIPTION:

asNeeded

CURRENTNESS REFERENCE:

Observed