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National Aquatic Resource Surveys

What data are available to download from the National Aquatic Resource Surveys?

Data collected during the National Aquatic Resource Surveys are available to download. Data are provided in flat files (csv) and are organized by indicator. The table below shows the parameters that were collected for each of the survey years and water resource types. Sort the table by data file type or by water resource type to view the available files. Users of the data are encouraged to review the Technical Reports, Field and Laboratory Manuals, and metadata files to understand the types of data available and how they were collected or measured.

Data File Type

Coastal Rivers & Streams Lakes Wetlands Description of Files
Algal Toxin     NLA 2012 NWCA 2011 Microcystin
Atrazine     NLA 2012    
Benthic Macroinvertebrates NCA 99-01,05-06;
NCCA 2010
WSA 04-05; NRSA 08-09 NLA 2007; NLA 2012   Condition, Count, Metrics, Taxa List
Buffer Characterization       NWCA 2011  
Chlorophyll a NCCA 2010   NLA 2007; NLA 2012 NWCA 2011 Located in Water Chemistry file for NLA 2007 & NCCA 2010
Dissolved Oxygen     NLA 2007; NLA 2012   Located in Water Chemistry (Profile) file for NLA 2012
Disturbance Gradient       NWCA 2011  
Enterococci   NRSA 08-09      
Field Chemistry   NRSA 08-09      
Fish   NRSA 08-09     Condition, Count, Metrics
Fish Tissue NCCA 2010 NRSA 08-09     Mercury Concentration and Condition; Contaminants. Additional fish tissue contaminant data available from Fish Tissue Data Collected by EPA.
Hydrographic Profile NCCA 2010        
Hydrology       NWCA 2011  
Landscape Data   WSA 04-05; NRSA 08-09 NLA 2007; NLA 2012 NWCA 2011 Metrics, Shapefiles, Watershed Stressors
Physical Habitat   WSA 04-05; NRSA 08-09 NLA 2007; NLA 2012   Condition, Index values, Metrics
Phytoplankton     NLA 2007; NLA 2012   Count and Taxa list
Plankton     NLA 2007   O/E and Condition
Recreation     NLA 2007    
Secchi     NLA 2007; NLA 2012    
Sediment NCCA 2010   NLA 2012 NWCA 2011 Mercury (Lakes); Enzymes (Wetlands); Indicator Status (Coastal)
Sediment Chemistry NCA 99-01,05-06;
NCCA 2010
       
Sediment Toxicity NCCA 2010        
Site Information NCA 99-01,05-06;
NCCA 2010
WSA 04-05; NRSA 08-09 NLA 2007; NLA 2012 NWCA 2011 UID, Site ID, Visit No., Lat, Long, Sample Date, Weights
Soil Chemistry       NWCA 2011 Chemical & Physical Properties
Soil Profile       NWCA 2011 Attributes & Horizon Morphology
Stream Velocity   WSA 04-05      
Surface Water Characterization       NWCA 2011  
Thalweg   WSA 04-05      
Trophic Status     NLA 2007; NLA 2012   Located in Condition Categories file for NLA 2012
USARAM       NWCA 2011 USA-RAM Attributes & Summary values
Vegetation       NWCA 2011 Taxonomy, Life History, Traits, Cover, Metrics
Underwater Video NCCA 2010        
Visual Assessment     NLA 2007    
Water Chemistry NCA 99-01,05-06;
NCCA 2010
WSA 04-05; NRSA 08-09 NLA 2007; NLA 2012 NWCA 2011 Profile, Condition, Nutrients, Anions/Cations, ANC
Zooplankton     NLA 2007; NLA 2012   Condition, Count, Metrics, Taxa list
Key Variables     NLA 2012   Site Info, Water Chemistry, Chl, Top Metrics
Condition Categories NCA 99-01,05-06;
NCCA 2010
NRSA 08-09 NLA 2007; NLA 2012 NWCA 2011 Located in applicable data files for each survey