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Sample Design: BLM Farmington District

Sample Design: BLM Farmington District
ID: 2511
State: Finalized
  • State: Finalized
  • Owner: Scott Miller
  • Spatial Design Category: Generalized Random Tessellation Stratified (GRTS)
  • Data Repository: <none>
  • Sites in Design: 88
  • Has Location Privacy: No

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The details of this Sample Design, including all the parameters used to generate it, are included below. Sample designs must belong to a Study Design.

Description

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Sample Design Parameters


Start Year

2016

Study Design

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Photos

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Documents

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Map of Sites

Stratum Panel Occasion

This sample design is based on master sample: Bureau of Land Management Lotic

Details of this master sample:



Frame

This sample design started with an initial frame of 67,033 sites, based on its master sample. The criteria (based on the master sample's attributes) were then used to refine the sample frame down to 687 sites:

Criteria Group 1
           
  BLM District Is Equal To FARMINGTON DISTRICT OFFICE

Target Population

The study area encompasses the perennial streams and rivers of the BLM New Mexico Farmington District and includes the Taos Field Office and Farmington Field Office. Reporting units: Farmington and Taos FO


Panel designs can help address sampling objectives by increasing the total number of samples at a lower overall cost. A common panel structure involves one or more panels with a high revisit frequency (e.g. an “Annual” panel), and other panels with a lower revisit frequency (e.g. a three year “Rotating” panel).

Panel Sampling Occasion (2 Year(s))
# Panel Name Panel Abbr. 1
1
Year 1
Yr1
2
Year 2
Yr2

This design uses the following attributes to create the stratification shown below. Each row in the table represents a stratum. This design’s panels are also shown in the table, even if it uses only a single, default panel.

Sample Attributes
  Attribute   Values In Frame
  StreamOr_1 7 Values: 1, 2, 3, 4, 5, 6, 7
  ADMU_ADMU_NAME 2 Values: FARMINGTON FIELD OFFICE, TAOS FIELD OFFICE
Attributes # Sites In Frame Frame Length (km) Stratum Attributes Panels
StreamOr_1 ADMU_ADMU_NAME Stratum Name Stratum Abbr. Year 1 Year 2 # of Sites
1 FARMINGTON FIELD OFFICE 45 0 1.0-FARMINGTON FIELD OFFICE S0 2 1
1 TAOS FIELD OFFICE 3 0 1.0-TAOS FIELD OFFICE S1 1 1
2 FARMINGTON FIELD OFFICE 46 0 2.0-FARMINGTON FIELD OFFICE S2 1 1
2 TAOS FIELD OFFICE 16 0 2.0-TAOS FIELD OFFICE S3 1 0
3 FARMINGTON FIELD OFFICE 112 0 3.0-FARMINGTON FIELD OFFICE S4 3 3
3 TAOS FIELD OFFICE 19 0 3.0-TAOS FIELD OFFICE S5 1 0
4 FARMINGTON FIELD OFFICE 12 0 4.0-FARMINGTON FIELD OFFICE S6 0 1
4 TAOS FIELD OFFICE 58 0 4.0-TAOS FIELD OFFICE S7 2 2
5 FARMINGTON FIELD OFFICE 124 0 5.0-FARMINGTON FIELD OFFICE S8 3 3
5 TAOS FIELD OFFICE 35 0 5.0-TAOS FIELD OFFICE S9 2 2
6 FARMINGTON FIELD OFFICE 30 0 6.0-FARMINGTON FIELD OFFICE S10 1 1
6 TAOS FIELD OFFICE 183 0 6.0-TAOS FIELD OFFICE S11 3 4
7 FARMINGTON FIELD OFFICE 0 0 7.0-FARMINGTON FIELD OFFICE S12
7 TAOS FIELD OFFICE 4 0 7.0-TAOS FIELD OFFICE S13 1 0
TOTAL 0 km      

Below is the complete list of sample sites that were drawn using the criteria for this sample design.

Number of sites before generating the GRTS sample: 687
Number of sites after generating the GRTS sample: 88
Number of oversamples: 48
Number of panels: 2
Number of strata: 14

Shapefile

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Distribution

The histogram charts below show the distribution of this sample design’s sites across the various panels and strata.


  Schema   Attribute   Description

PROJCS["USA_Contiguous_Albers_Equal_Area_Conic_USGS_version",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Albers"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",-96.0],PARAMETER["Standard_Parallel_1",29.5],PARAMETER["Standard_Parallel_2",45.5],PARAMETER["Latitude_Of_Origin",23.0],UNIT["Meter",1.0]]