Data format: Shapefile
File or table name: riparianLHFO
Coordinate system: Universal Transverse Mercator
Theme keywords: BLM, Bureau of Land Management, riparian, planningCadastre, biota, 002, Land Use Planning, Riparian, Vegetation
| Riparian Habitat used in the BLM Arizona Lake Havasu Field Office RMP (2007) | |
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Data format: Shapefile File or table name: riparianLHFO Coordinate system: Universal Transverse Mercator Theme keywords: BLM, Bureau of Land Management, riparian, planningCadastre, biota, 002, Land Use Planning, Riparian, Vegetation |
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Abstract:
GIS dataset for riparian habitat in the Lake Havasu Field Office in Arizona and California. This data was created using a combination of the most recent riparian data available for the area. The Bill Williams River data is from 1993. The Colorado River data is from 1997. |
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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.
GIS dataset for riparian habitat in the Lake Havasu Field Office in Arizona and California. This data was created using a combination of the most recent riparian data available for the area. The Bill Williams River data is from 1993. The Colorado River data is from 1997.
For regional analysis and display at 1:24,000. This dataset was prepared to support decisions in the Lake Havasu Field Office Resource Management Plan.
Dataset locally known as riparianLHFO.shp. This dataset and other datasets in the Lake Havasu Field Office Geographic Information Database represent data for the BLM Lake Havasu Field Office.
publication date
This data should be used in conjunction with the Lake Havasu Field Office RMP of 2007. This data should not be used at a scale larger than 1:24,000. The data and corresponding attributes are only as accurate as the source maps from which they were obtained, and may vary depending on the data and method of acquisition. This data is suitable for regional planning, management decision support at intermediate scales (i.e. 1:24,000 or smaller), and cartographic purposes. The data is not suitable for analysis at scales larger than 1:24,000. If the Receiving Agency (RA) has modified the data in any way, they are obligated to describe the types of modifications they have performed on hardcopy maps utilizing the data. RA specifically agrees not to misrepresent LHFO datasets or to imply that any changes made were approved by BLM LHFO. No warranty is made by the BLM for use of the data for purposes not intended by BLM. This information may be updated without notification.
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Feature attributes were taken from source material. Code assignments are believed to be representative of the source document.
Data was reviewed for correct topological structure. Duplicate lines have been removed.
Data is considered complete for the LHFO RMP. When more recent data becomes available this may be updated.
Overall horizontal accuracy for this data is not greater than national mapping accuracy standards (NMAS) for USGS source maps. Snapping and coordinate shift tolerances were maintained at 0.01 meters or less through editing. Horizontal positional accuracy for the digital data set was tested by visual comparison of the source data with hard copy verification plots.
Colorado River riparian data
The coverage riptm93 was created from Thematic Mapping Imagery (TM).
A selection of riparian vegetation was made from lcr_veg97 using CW, SC, SH, SM, HM, and AW. This data was clipped to the field office boundary. Riptm93 was clipped at the mouth of the Bill Williams River and at the field office boundary. Then the lcr_veg97 selection and the clipped riptm93 were merged to create one dataset for the field office. The revegp.shp layer was then merged with the previous data to create the riparianLHFO.shp.
2610 Sweetwater Ave
Metadata created for Approved RMP.
Dataset reprojected from NAD 1927 UTM Zone 12 to NAD 1983 UTM Zone 12 using NADCON. Metadata updated.
Internal feature number.
ESRI
Feature geometry.
ESRI
calculated area for lcr veg
1997 LCR Veg
calculated perimeter for lcr veg
1997 LCR Veg
Internal feature number for lcr veg
1997 LCR Veg
Internal feature number for lcr veg
1997 LCR Veg
X coordinate for lcr veg
1997 LCR Veg
Y coordinate for lcr veg
1997 LCR Veg
a combination of the AO_veg97 and AO_str97 columns
1997 LCR Veg
vegetative communities
1997 LCR Veg
Cottonwood-Willow
1997 LCR Veg
Saltcedar
1997 LCR Veg
Saltcedar-honey mesquite
1997 LCR Veg
Saltcedar-screwbean mesquite
1997 LCR Veg
Honey mesquite
1997 LCR Veg
Arrowweed
1997 LCR Veg
unknown from Bill Williams dataset
LHFO BLM
unknown from the reveg dataset
LHFO BLM
A&O structure types
1997 LCR Veg
Mature stand, overstory >15ft high, intermediate class 2-15 ft tall, understory 0-2 ft tall
1997 LCR Veg
overstory >15 ft high constitutes > 50% of trees, little or no intermediate class
1997 LCR Veg
largest portion of trees 10-20 ft high, with few above 20 ft or below 5 ft high
1997 LCR Veg
few trees >15 ft, 50% of vegetation 5-15 ft tall, 50% 0-2 ft high
1997 LCR Veg
60-70% of vegetation 0-2 ft tall, remainder in 5-15 ft class
1997 LCR Veg
75-100% of vegetation 0-2 ft high
1997 LCR Veg
acreage of polygons in AO layer
1997 LCR Veg
descriptions of data used
1997 LCR Veg
original 1994 vegetation polygon
1997 LCR Veg
poylgon manipulated to 1997 methods, minimum polygon 1 acre
1997 LCR Veg
polygon updated from 1994 to 1997 conditions
1997 LCR Veg
polygon updated based on 1997 field reconnaissance
1997 LCR Veg
new 1997 polygon
1997 LCR Veg
sequential numbers from natveg94 layer
1997 LCR Veg
area from riptm93 dataset
LHFO BLM
perimeter from riptm93 dataset
LHFO BLM
Internal feature number from riptm93 dataset
LHFO BLM
Internal feature number from riptm93 dataset
LHFO BLM
type of cover identified
LHFO BLM
riparian vegetation present
LHFO BLM
area from reveg dataset
LHFO BLM
perimeter from reveg dataset
LHFO BLM
name of revegetation site
LHFO BLM
length from reveg dataset
ESRI
Area of feature in internal units squared.
ESRI
total acres for each unit
XTools
Attribute items are in typical ArcInfo point, line and polygon format.
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BLM-LHFO provides this data "as is" without liability. No warranty is made by the Bureau of Land Management as to the accuracy, reliability, or completeness of these data for individual use or aggregate use with other data.
Shapefile or ESRI ArcInfo Coverage
Contact Distributor
Contact Distributor
2610 Sweetwater Ave