image description
Sample Design: Kemmerer
  • ID: 2620
  • State: Finalized
  • Owner: Scott Miller
  • Collaborator(s): None
  • Spatial Design Category: Generalized Random Tessellation Stratified (GRTS)
  • Sites in Design: 90
  • Has Location Privacy: No
  • Data Repository: <none>
Basics

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

Description

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Sample Design Parameters


Start Year

2017

Initiation Year

2017

Retirement Year

Study Plan

BLM AIM Assessment, Inventory, and Monitoring (AIM) of Wadeable Lotic Systems v1.0

Data Repositories

<none>

Photos

<none>

Documents

<none>

Map of Sites

  • Stratum
  • Panel
  • Occasion
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Area of Inference

<none>

AOI Notes

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Master Sample

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

Details of this master sample:



Frame Definition

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 986 sites:

Criteria Group 1
           
  BLM Field Office Is Equal To Kemmerer Field Office

Target Population

BLM perennial streams and rivers in the Kemmerer FO as defined by the master sample NHD version


Panels

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 (3 Year(s))
# Panel Name Panel Abbr. 1
1
2017
2017
2
2018
2018
3
2019
2019

Stratification

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. 2017 2018 2019 # of Sites
Large Streams (3&4) 228 0 Large Streams (3&4) S0 1 1 1
Rivers (5+) 117 0 Rivers (5+) S1 3 2 2
Small Streams (1&2) 641 0 Small Streams (1&2) S2 6 7 7
TOTAL 0 km      

Generated Sample Sites

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: 986
Number of sites after generating the GRTS sample: 90
Number of oversamples: 60
Number of panels: 3
Number of strata: 3

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Sample Sites

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Distribution

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


Additional Design Documentation
Attributes
  Schema   Attribute   Description
Projection Details

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]]

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