Valid Values - Methods



     
  
  
   
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Category Code Description Source Reference Low level method Active Alias Modified By Modified Date
Preparation FILTER.45um-CA Water sample filtered with 0.45 micron (micrometer) cellulose acetate filter (CA) Y FILTER .45um-CA CNEU461 03/24/2020
Analysis CALC-351.2-350.1 Ammonia or Organic Nitrogen calculated via Total Kjeldahl Nitrogen by EPA351.2 (Semiautomated Colorimetry) and Ammonia by EPA350.1 (Nitrogen as Ammonia, Colorimetric, Automated Phenate) Y mbac461 08/26/2024
Preparation COMP-TISSUE Composite tissue samples by combining individuals and homogenizing. Y KKIN461 03/06/2018
Measurement TRANS-TUBE Transparency tube with Secchi disk or similar Y CNEU461 03/15/2010
Preservation Freeze-15DegC Frozen at -15 degrees Celsius Y KKIN461 04/22/2013
Measurement TURB-FNRM Turbidity, nephelometric, field non-ratio meter (white light, 90 deg detector only) Y CNEU461 10/05/2004
Measurement BIOHabitatMetric009 Number of taxa in the sample that survive in a narrow range of cold water temperatures Y chmo461 11/06/2025
Preparation DECANT Decant Y CNEU461 06/10/2009
Collection INSITU-SPE Active Integrative Sampler with In Situ Solid Phase Extraction (SPE) disk or cartridge. Y CNEU461 02/07/2019
Measurement BIOHabitatMetric007 The number of taxa in the sample represented by organisms that have adaptations to help them attach to surfaces in flowing water. Y chmo461 11/06/2025
Measurement ISE-NH4 Ion-Selective Electrode Probe for Field Measurement of Ammonium Ions in Water Y CNEU461 06/10/2014
Measurement TURB-FRM Turbidity, nephelometric, field ratio meter (white light, 90 deg detector w/correction detectors) Y CNEU461 10/05/2004
Measurement BIOHabitatMetric020 The percent of the sample made up of organisms that consume fine particulate organic matter collected from the water column Y chmo461 11/06/2025
Analysis TBE-CS137-2007 Cs-137 Radiochemistry, Teledyne-Brown Engineering SOP, based on EPA 901.1 (Gamma Radiation Detection) Y CNEU461 05/24/2016
Collection BAILER-UNKNOWN Bailer, material unknown Y KKIN461 03/25/2016
Collection CRABPOT Captured by crab pot. N Y CNEU461 08/23/2023
Collection Multiprobe Collected using multi-parameter (multi-sensor) probe or sonde N Y KKIN461 10/17/2024
Preparation SIEVE-0.063MM Sieved with 0.063 millimeter screen Y CNEU461 06/01/2009
Measurement BIOHabitatMetric037 The ratio of organsims that feed on attached periphyton (Scrapers) to the number of organisms that feed by filtering organic matter from the water column (Filterers). Y chmo461 11/06/2025
Measurement IFGA-METER Infrared Dual Wavelength Internal Cell Gas Analyzer/Field Meter (for percent CH4, CO2, O2) Y IGA-METER CNEU461 08/16/2018
Measurement BIOHabitatMetric053 Number of taxa in the sample that produces a single generation per year Y chmo461 11/06/2025
Measurement PYRANOMETR Solar radiation by portable Pyranometer Y CNEU461 09/19/2007
Measurement BIOHabitatMetric003 Ratio of Baetidae/Ephemeroptera within the sample Y chmo461 06/04/2012
Preparation DRIEDTISSUE Tissue dried prior to analysis. Y CNEU461 07/31/2014
Measurement SalinityMeterCalcCT Salinity by meter, calculated from conductivity and temperature. N Y CNEU461 12/19/2024
Measurement SWFADCP Streamflow by acoustic doppler current profiler N Y CNEU461 04/25/2025
Measurement Cond-Cell-Inductive Conductivity by Inductive (Electrodeless or Toroidal) Cell or Sensor. N Y CNEU461 06/02/2026
Collection Lysimeter-Suction Suction, vacuum, or porous cup lysimeter N Y CNEU461 02/12/2026
Collection Lysimeter-Gravity Gravity, zero-tension, or passive lysimeter N Y CNEU461 02/12/2026
Collection VHG-SW-GW-Piezometer Vertical hydraulic gradient between surface water and groundwater by instream piezometer. N Y VHG-S-GW-Piezo CNEU461 03/12/2026
Collection PassivePED-LPDE LPDE Polymeric Sampling Device or Polyethylene Device (PED) for passive equilibration sampling over a specific time interval. Typically a sheet of LDPE in a pouch or metal frame or as a strip in lab ex situ testing. See result comments in dataset for specific device configuration. N Y CNEU461 03/19/2026
Collection PassiveSPMD Semi-Permeable Membrane Device (SPMD) for passive accumulation sampling over a specific time interval. Typically a thin walled, lay flat, non-porous, LDPE membrane tubing containing a thin film of lipid. See result comments in dataset for specific device configuration. N Y CNEU461 03/19/2026
Measurement TURB-SENSOR Turbidity sensor or probe used in-situ N Y CNEU461 01/13/2026
Analysis TURB-SampleCell Turbidity meter, cuvette style where sample is removed from the environment and poured into sample cell inserted into meter. N Y CNEU461 01/13/2026
Collection AutosamplerHyporheic Water sample from pipe in hyporheic zone using tubing and portable autosampler. N Y CNEU461 07/17/2026
Collection ScottyBottle Bottle, Scotty/Scott/Thoreson, for water sampling N Y CNEU461 08/12/2026
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1536 records