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Sample Design: TresRiosSupp

Sample Design: TresRiosSupp
ID: 2667
State: Finalized
  • State: Finalized
  • Owner: Scott Miller
  • Spatial Design Category: Generalized Random Tessellation Stratified (GRTS)
  • Data Repository: <none>
  • Snapshot: 7/20/2017
  • Snapshot by: Scott Miller
  • Sites in Design: 90
  • 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

2017

Study Design

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Photos

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Documents

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Map of Sites

Stratum Panel Occasion

Area of Inference

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AOI Notes

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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 469 sites:

Criteria Group 1
           
  BLM Field Office Is Equal To TRES RIOS FIELD OFFICE

Target Population

Supplemental design for small streams in Tres Rios given change in FO boundaries. Needed SS, but did design for all MDC


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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
  Stream_Order_Group 3 Values: Large Streams (3&4), Rivers (5+), Small Streams (1&2)
Attributes # Sites In Frame Frame Length (km) Stratum Attributes Panels
Stream_Order_Group Stratum Name Stratum Abbr. Default
Large Streams (3&4) 95 0 Large Streams (3&4) S0 10
Rivers (5+) 243 0 Rivers (5+) S1 5
Small Streams (1&2) 131 0 Small Streams (1&2) S2 30
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: 469
Number of sites after generating the GRTS sample: 90
Number of oversamples: 45
Number of panels: 1
Number of strata: 3

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]]