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Sample Design: Idaho Hells Canyon

Sample Design: Idaho Hells Canyon
ID: 50
State: Finalized
  • State: Finalized
  • Owner: Tim Copeland
  • Spatial Design Category: Generalized Random Tessellation Stratified (GRTS)
  • Data Repository: <none>
  • Snapshot: 2/28/2013
  • Snapshot by: Tim Copeland
  • Sites in Design: 1021
  • 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.



Sample Design Parameters

Start Year


Study Design






Map of Sites

Stratum Panel Occasion

Area of Inference


AOI Notes


This sample design is based on master sample: Columbia Basin Master Sample

Details of this master sample:


This sample design started with an initial frame of 551,046 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 1,021 sites:

Criteria Group 1
  Columbia Basin Is Equal To Yes AND
  State Is Equal To ID AND
  HUC 4 Code (Subbasin) Is Equal To 17060101

Criteria Group 2
  Columbia Basin Is Equal To Yes AND
  State Is Equal To ID AND
  HUC 4 Code (Subbasin) Is Equal To 17060103

Target Population




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: 1,021
Number of sites after generating the GRTS sample: 1,021
Number of oversamples: 521
Number of panels: 1
Number of strata: 1




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

  Schema   Attribute   Description