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Sample Design: Spokane1
ID: 2512
State: Finalized
  • State: Finalized
  • Owner: Scott Miller
  • Spatial Design Category: Generalized Random Tessellation Stratified (GRTS)
  • Data Repository: <none>
  • Snapshot: 3/13/2016
  • 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

2016

Study Design

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

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 374 sites:

Criteria Group 1
           
  BLM District Is Equal To SPOKANE DISTRICT OFFICE AND
  Stream Order Is Not Equal To 9.0 AND
  Stream Order Is Not Equal To 8.0 AND
  Stream Order Is Not Equal To 7.0

Target Population

BLM perennial streams in the Spokane District 


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
Year1
Yr1
2
Year2
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
  ADMU_ADMU_NAME 2 Values: SPOKANE BORDER FIELD OFFICE, SPOKANE WENATCHEE FIELD OFFICE
  StreamOr_1 6 Values: 1, 2, 3, 4, 5, 6
Attributes # Sites In Frame Frame Length (km) Stratum Attributes Panels
ADMU_ADMU_NAME StreamOr_1 Stratum Name Stratum Abbr. Year1 Year2 # of Sites
SPOKANE BORDER FIELD OFFICE 1 47 0 SPOKANE BORDER FIELD OFFICE-1.0 S0 3 2
SPOKANE BORDER FIELD OFFICE 2 16 0 SPOKANE BORDER FIELD OFFICE-2.0 S1 2 1
SPOKANE BORDER FIELD OFFICE 3 9 0 SPOKANE BORDER FIELD OFFICE-3.0 S2 0 1
SPOKANE BORDER FIELD OFFICE 4 54 0 SPOKANE BORDER FIELD OFFICE-4.0 S3 3 3
SPOKANE BORDER FIELD OFFICE 5 47 0 SPOKANE BORDER FIELD OFFICE-5.0 S4 2 3
SPOKANE BORDER FIELD OFFICE 6 1 0 SPOKANE BORDER FIELD OFFICE-6.0 S5 0 0
SPOKANE WENATCHEE FIELD OFFICE 1 26 0 SPOKANE WENATCHEE FIELD OFFICE-1.0 S6 1 1
SPOKANE WENATCHEE FIELD OFFICE 2 38 0 SPOKANE WENATCHEE FIELD OFFICE-2.0 S7 2 3
SPOKANE WENATCHEE FIELD OFFICE 3 32 0 SPOKANE WENATCHEE FIELD OFFICE-3.0 S8 2 1
SPOKANE WENATCHEE FIELD OFFICE 4 34 0 SPOKANE WENATCHEE FIELD OFFICE-4.0 S9 2 2
SPOKANE WENATCHEE FIELD OFFICE 5 30 0 SPOKANE WENATCHEE FIELD OFFICE-5.0 S10 1 1
SPOKANE WENATCHEE FIELD OFFICE 6 40 0 SPOKANE WENATCHEE FIELD OFFICE-6.0 S11 2 2
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: 374
Number of sites after generating the GRTS sample: 90
Number of oversamples: 50
Number of panels: 2
Number of strata: 12

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]]