CHaMP Measurement Types

Measurement Types describe groups of Measurement Data that are captured during the field survey and usually have different data structures. Note: Measurement Types not listed are not utilized by CHaMP Protocols.

Survey Setup

• Visit Information: Includes date/time of sampling, UTM coordinates, GPS information and summarized measurement metrics.
• Crew: Includes individual crew names and roles.
• Visit Overview:
• Supplementary Photo: Includes notes and link to photos not required by the protocol. Often include scenery, gear, crew, and points of interest.

Layout

• Monument: Monuments are markers used to refind sites and benchmarks. Includes numbers, UTM coordinates, GPS accuracy, bank positions, photos and notes of monuments.
• Benchmark: Benchmarks are survey markers used to tie spatial coordinates to on-the-ground locations. The types, status (active/retired), coordinates, install year, and orientation to monuments are included. Monument Number is a foreign key to the Monument table.
• Site Marker: Site Markers are used to identify the top/bottom of a site. UTM coordinates and accuracy, and directional information to re-locate transects.
• Mid Channel Bottom of Site: Coordinates and accuracy of the mid-channel bottom of site.
• Bankfull Width: Includes bankfull width measurements used to determine site length.
• Control Point: Includes control locations, status, and coordinates used by topographic surveyors.

Site Attributes

• Stream Temperature Logger: Includes coordinates, photos, attachment types, and install information of stream temperature loggers.
• Stream Temperature Logger Maintenance: Contains records of stream temperature logger condition, water flow, and action performed during the visit (e.g. removed, replaced). Logger ID attribute links to Stream Temperature Logger table.
• Air Temperature Logger: Contains records of air temperature logger location, monument orientation, and install information.
• Water Chemistry: Contains alkalinity, conductivity and instantaneous temperature measurements.
• Cross-section: Cross section inventory for each visit, including total discharge and count of discharge stations along the cross-section.
• Discharge: Cross section station measurements of velocity and depths for discharge. Cross Section ID links to the Cross-section table.

Channel Units

• Pebble: Contains individual pebble measurements (Substrate Size Class or Substrate Measurement (2011 only)) and embeddedness for Cobbles (Percent Buried and Percent Fines).
• Channel Segment: Added in 2014 to describe features of side channels (e.g. type, length, percent wetted, width).
• Channel Unit: Contains channel unit types (Tier 1/Tier 2). Segment Number links to Channel Segment table.
• Pebble Cross-Section:
• Fish Cover
• Substrate Cover
• Large Woody Piece
• Pool Tail Fines
• Undercut Banks

Transects

• Transect Photos
• Riparian Structure
• Canopy Cover
• Solar Pathfinder

Invertebrates

• Drift Invertebrate Sample: Includes drift sampling net placement, depths, velocities and deployment times.
• Drift Invertebrate Sample Results: Includes sample sorting metadata, such as jar counts, sorting time and personnel.
• Taxon By Size Class Counts: Contains invertebrate taxon, lifestage, size class, count and quality of all invertebrates in the sorted sample.
• Sample Biomasses: Contains dry mass of pooled fractions of sample (Aquatic, Terrestrial and Aquatic Terrestrial). Aquatics are invertebrates with aquatic larval stages, Terrestrial are invertebrates with terrestrial larval stages, and Aquatic_Terrestrial are the adult life stages of aquatics that have a terrestrial form.