INSTITUTE FOR FISHERIES RESOURCES GIS TECHNICAL WORK GROUP -- GIS METADATA

LIBRARY: 		Navarro

COVERAGE NAME:		ucd_sample_sites.shp

METADATA FILE:		ucd_sample_sites.shp.txt

METADATA FILE DATE:	June 11, 2003


METADATA PREPARER:	Eli Asarian
                      	Institute for Fisheries Resources (IFR)
                        791 Eighth Street  Ste. N
                        Arcata, CA  95521
			(707) 822-9428

DATA ORIGINATOR:
Josh Viers
Information Center for the Environment (ICE)
UC Davis
1 Shields Ave
Davis, CA 95616
jhviers@ucdavis.edu
(530) 754-6051


COVERAGE DESCRIPTION:	A table of sample sites was created by Josh Viers at ICE in 2001 to show the locations of sites used by Dr. Michael Johnson and staff at the John Muir Institute at UC Davis for their studies in the Navarro River basin from 2000 through 2002.  Studies were funded by Caltrans to assess the effects of road projects on salmonids.   The sites were used for a variety of research projects, but only the fish snorkel survey data were made available to  KRIS Navarro.  The sample sites coverage was based on GPS points taken at reach locations in five subwatersheds (Rancheria Creek, Anderson Creek, Indian Creek, North Fork Navarro River and Flynn Creek).  An Excel table of latitude and longitude points was sent to KRIS staff on June 10, 2002.


METHODS:  
Bryan Flaig of KRIS staff used the MS Excel table of latitude and longitude points to create a shapefile using the ArcView command Add Event Theme.  He then reprojected the newly created shapefile from geopgraphic into UTM Zone 10 NAD 27 using the ArcView Projector! Extension.  


VITAL STATISTICS:

Datum:          NAD 27
Projection:     UTM
Units:          Meters
1st Std. Parallel:         34 00 00 (34.0 degrees N)
2nd Std. Parallel:         40 30 00 (40.5 degrees N)
Longitude of Origin:      -120 00 00 (120.0 degrees W)
Latitude of Origin:        00 00 00 (0.0 degrees)
False Easting (X shift):   0
False Northing (Y shift):  0
Source:                    see notes above
Data Structure:            Vector (point)


DATA DICTIONARY:

Structure for attribute table:

	Column		Column Name
        -------         ----------
	1		LATITUDE
	2		LONGITUDE


LATITUDE: The latitude of the sampling site in decimal degrees.

LONGITUDE: The longitude of the sampling site in decimal degrees.



DATA QUALITY ASSESSMENT:
Geographic accuracy should be high.  A GPS was used to generate all coordinants.  When overlaid on a on 1:24k topo map, nearly all points appear within 10 meters of streams.  The only thing that detracts from the accuracy is that the ArcView Projector! extension was used to reproject the points, which is not as accurate as using ArcInfo.