| NOXIOUS_WEEDS_2010 | |
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Data format: Personal GeoDatabase Feature Class File or table name: NOXIOUS_WEEDS_2010 Coordinate system: Universal Transverse Mercator Theme keywords: Colorado Noxious Weeds, Colorado Department of Transportation, CDOT, transportation |
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Abstract:
The data represents Colorado noxious weed categories A, B, and C as distributed along Colorado Department of Transportation (CDOT) highways. Weeds were collected in 2009 and 2010 by EcoPlan, using handheld GPS units while riding along in a vehicle. Weed patches are represented by linear features. |
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Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
The data represents Colorado noxious weed categories A, B, and C as distributed along Colorado Department of Transportation (CDOT) highways. Weeds were collected in 2009 and 2010 by EcoPlan, using handheld GPS units while riding along in a vehicle. Weed patches are represented by linear features.
Data were collected and mapped to facilitate control of noxious weeds by CDOT along highways and interstates within its jurisdiction.
ground condition
None
Cell phone contact: (303) 594-9699
EcoPlan Associates, Inc.
In instances here CDOT right-of-way (ROW) boundaries could not be determined in the field, "unknown" was entered in the "ROW_Width" attribute. The following attribute values were visually estimated in the field: "ROW_Width", "PW_Cover", "PW_Contain", "Second_Cover", "SW_Contain", and "Buff_Dist"
Some polylines are shorter than actual distribution of weeds due to traffic safety/logistical constraints (i.e., inability to back up safely or safely reach the start of some weed patches due to traffic and/or roadway conditions). Some polylines cross roadways in areas where weed patches continue from outside to inside shoulders (or vice versa) on on/off ramp areas.
For Category B and C noxious weeds, only patches approximately 10 feet by 10 feet in dimension or larger were mapped. For Category A noxious weeds, all weed patches were mapped, including those less than 10 feet by 10 feet in dimension.
Data were collected using Trimble GeoXH GPS units to achieve submeter accuracy. Average horizontal precision achieved over all mapped features was 0.5 meters.
Data were collected in the field by a survey crew consisting of two persons (driver + mapper). Field data were collected using Trimble GeoXH GPS units, utilizing TerraSync software. Field data (rover) files were downloaded on a daily basis using GPS Pathfinder Office version 4.10 and uncorrected data (.ssf) files transmitted to the project manager (PM) via e-mail. PM reviewed all filies in Pathfinder for completeness and logical consisitency. Data files were differentially corrected using the nearest available base station, resulting in corrected (.cor) data files. Corrected data files were exported to ESRI shapefiles and compiled into a geodatabase in ArcMap version 9.3.
Cell phone contact: (303) 594-9699.
Internal feature number.
ESRI
Feature geometry.
ESRI
Name (initials) of the individual who collected the data with the GPS unit in the field
Date data was collected in the field.
CDOT Maintenance Section Number
CDOT Maintenance Patrol
Name of highway or route number and log letter along which weeds were located
Width of right-of-way on side of road were weeds were mapped. Units are feet, distance is from outer edge of road surface to outer edge of right-of-way
Name of primary (dominant) noxious weed in mapped area
Percentage of mapped area covered by primary weed species.
Whether primary weed is contained within the CDOT right-of-way ("Yes") or also occurs outside ("No")
Name of second most dominant weed in area mapped
Percentage of mapped area covered by secondary weed species.
Whether secondary weed is contained within the CDOT right-of-way ("Yes") or also extends outside ("No")
comments regarding location, other noxious weeds in the mapped area.
Distance the WEEDLINES linear feature was buffered to create the polygonal WEEDBUFFS theme (i.e., one-half the estimated patch width)
Classification of weed patch distance from edge of roadway (1 = 0-30 feet, 2 = 31+ feet, 1&2 3 = both zones
Classification of type of spray equipment needed to access mapped weed patch.
Length of feature in internal units.
ESRI
4201 E. Arkansas Ave.