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Other Data Resources
We have assembled a list of data sets that may be of interest to NACP researchers. These data are available from several different data centers, and are organized by subject area (ex: wetlands). Please select one of the data themes listed below to review a listing of available data and associated data centers. Links to individual data centers and data sets are included where available.

Please note: Some of the data sets listed below are under development. Links to these data sets will be provided when the data become available. If there are additional data sets that should be included, please let us know. (contact us)
Digital Elevation Fire Data Atmospheric Transport
Wetlands Flux Tower Weather
Remote Sensing: Land Cover / Land Cover Change Aircraft Flux Climate Scenarios
Remote Sensing: Biophysical Data Emissions Hydrology
Remote Sensing: Radiation Data Soils Intensive Field Activities
Biomass Permafrost / Freeze Thaw OCCC
Crop Inventory Atmospheric Carbon Dioxide Modeling and Synthesis Thematic Data Center
IPCC Model Output


Digital Elevation

Data Center Description Data Sets
USGS Earth Resources Observation and Science (EROS) Data Center (EDC), Elevation Products Digital raster elevation data sets derived from a variety of sources. Global 30 Arc-Second Elevation Dataset (GTOPO30)
National Elevation Dataset (NED)
Shuttle Radar Topography Mission (SRTM)
Shuttle Radar Topography Mission (SRTM) DTED®
Digital Elevation Models (DEMs)
Digital Elevation Continued:
Geobase (Canada) Geospatial data for all of Canada separated into different themes. Geopolitical Boundaries
Canadian Digital Elevation Data (CDED)
Canadian Geodetic Network
Geographical Names of Canada
National Road Network (NRN)
Digital Elevation Continued:
Geospatial One Stop Data Center - U.S. Maps and Data Geospatial data that describe the height above or below a reference datum. Elevation and Derived Products
Digital Elevation Continued:
NRCS National Cartography and Geospatial Center Digital elevation data resources. Digital Elevation Data (DEM, NED, LIDAR, & IFSAR)

Wetlands

Data Center Description Data Sets
U.S. National Wetlands Inventory (NWI) Data and information on the characteristics, extent, and status of U.S. wetlands and deepwater habitats. NWI Wetlands Digital Data
NWI Wetlands Mapper
Wetlands Continued:
Canadian Wetland Inventory (CWI) Assessment the status and trends of wetland ecosystems in Canada (in progress). CWI Inventory Progress

Remote Sensing: Land Cover / Land Cover Change

Data Center Description Data Sets
Earth Observation for Sustainable Development of Forests (EOSD) (Canada) National maps of Canadian forested land cover, forest composition, land cover change, and forest biomass (in progress). Also Canada Landsat Mosaics. Forest Land Cover Mapping
Forest Change Monitoring
Canada Landsat Mosaics, 1990 and 2000
Remote Sensing:Land Cover/Land Cover Change Continued:
USGS Earth Resources Observation and Science (EROS) Data Center (EDC), Satellite Products Imagery collected by satellites for earth interpretation. ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer)
AVHRR (Advanced Very High Resolution Radiometer)
Declassified Satellite Imagery - 1
Declassified Satellite Imagery - 2
EO-1 (Earth Observing-1), Hyperion and Advanced Land Imager (ALI)
Landsat ETM+ (Enhanced Thematic Mapper Plus)
Landsat MSS (Multispectral Scanner)
Landsat TM (Thematic Mapper)
LDCM (Landsat Data Continuity Mission)
MODIS (Moderate Resolution Imaging Spectroradiometer)
MRLC2001 (Multi-Resolution Land Characteristics 2001)
NALC (North American Landscape Characterization)
NLDC (NASA Landsat Data Collection)
SIR-C (Spaceborne Imaging Radar C-band)
TerraLook
Tri-Decadal Global Landsat Orthorectified
Tri-Decadal Global Landsat Orthorectified TM and ETM+ Pan-sharpened Mosaics
USGS Commercial Data Purchases (UCDP) Imagery
Remote Sensing:Land Cover/Land Cover Change Continued:
National Land and Water Information Service (Canada) Agri-environmental data on land use, water, climate, and biodiversity. Land Cover (in progress)
Agri-Environmental Indicators
Canada Land Inventory (Agriculture) Data
National Ecological Framework for Canada (Ecostratification Viewer) (GIS Layers)
Plant Hardiness Zones of Canada 2000
Remote Sensing:Land Cover/Land Cover Change Continued:
Global Land Cover Facility Remotely sensed satellite data and products that explain land cover from the local to global scales. ASTER (L1B imagery)
IKONOS (fine resolution imagery)
Landsat (GeoCover, ETM+, MSS, TM)
MODIS (32-day & 16-day composites)
QuickBird (fine resolution imagery)
OrbView (fine resolution imagery)
SRTM (30 m, 90 m & 1 km elevation imagery)
AVHRR Products (GIMMS, GloPEM, Land Cover Classification & Tree Cover Continuous Fields)
Landsat Products (Landsat Mosaics, Landsat Geocover Degree Subsets, & Coastal Marsh Health Index)
GOES Products (Radiative Fluxes)
MODIS Products [Vegetative Cover Conversion (VCC), Vegetation Continuous Fields (VCF) & Normalized Difference Vegetation Index (NDVI)]
IUCN/UNEP World Database on Protected Areas
Remote Sensing:Land Cover/Land Cover Change Continued:
Center for Sustainability and the Global Environment (SAGE) Maps, computer models and data sets to describe the behavior of Earth’s terrestrial ecosystems, hydrological systems, and climate. Atlas of the Biosphere
IBIS 2.6 (Integrated BIosphere Simulator) Model
Global Land Use Data
Soil Carbon & Nitrogen Database
1992 Major Crops Dataset
1992 Croplands Dataset
Historical Croplands Dataset (1700-1992)
Global Potential Vegetation Dataset
U.S. Irrigated Land
Remote Sensing:Land Cover/Land Cover Change Continued:
Land Processes Distributed Active Archive Center (LP DAAC) MODIS land products derived from data acquired by the Terra and Aqua satellites. Terra & Aqua MODIS Land Cover/Change
Terra & Aqua MODIS Thermal Anomalies/Fire
Terra & Aqua MODIS Vegetation Conversion/Continuous Fields
Terra & Aqua MODIS Burned Area
Remote Sensing:Land Cover/Land Cover Change Continued:
USDA NRCS Soil Geography Small scale digital soil geographic databases (GIS-ready) and other geospatial data layers. Major Land Resource Areas (MLRA)
National Coordinated Common Resource Area (CRA) Geographic Database
Geospatial Data Gateway
State of the Land
Thematic Maps
Remote Sensing:Land Cover/Land Cover Change Continued:
Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC), MODIS Land Product Subsets MODIS land subsets by product, site, map server, or Google Earth. Also customized North American subsets for user-defined area and time period. Global MODIS Subsetting and Visualization Tool
North American MODIS Subsetting and Visualization Tool
MODIS Data for Selected Field Sites
Remote Sensing:Land Cover/Land Cover Change Continued:
Natural Resources Canada (NRCan) Over sixty geospatial data collections relevant to Canada's natural resources via the GeoGratis Data Portal. Search NRCan Data Collections by Data Set Title
Search NRCan Data Collections by Keyword
Search NRCan Data Collections by Product
Download Directory for NRCan Data
Remote Sensing:Land Cover/Land Cover Change Continued:

USGS Earth Resources Observation and Science (EROS) Data Center (EDC), Land Cover Products

 Land use/land cover and resource-related data sets derived from USGS and other data sources. National Land Cover Data 1992 (NLCD 92)
MRLC2001 (Multi-Resolution Land Characteristics 2001)
Land Use and Land Cover (LULC)
Global Land Cover Characterization (GLCC)
AVHRR NDVI Composites
Remote Sensing:Land Cover/Land Cover Change Continued:
Geospatial One Stop Data Center - U.S. Maps and Data Access geospatial information from Federal agencies and a growing number of state, local, tribal and private agencies through one complete and comprehensible a geographic information system (GIS) portal. Administrative and Political Boundaries
Agriculture and Farming
Biology and Ecology
Environment and Conservation
Geological and Geophysical
Imagery and Base Maps
Locations and Geodetic Networks
Transportation Networks
Utilities and Communication
Remote Sensing:Land Cover/Land Cover Change Continued:
FGDC National Geospatial Data Clearinghouse A collection of over 250 spatial data servers that have digital geographic data primarily for use in Geographic Information Systems (GIS), image processing systems, and other modeling software. FGDC Geospatial Data Gateway
EDC Geospatial Data Gateway

NOAA Coastal Services Center (CSC) Geospatial Data Gateway
Natural Resources Conservation Service (NRCS) Geospatial Data Gateway
ESRI Geospatial Data Gateway
Alaska Geographic Data Committee (AGDC) Geospatial Data Gateway
Remote Sensing:Land Cover/Land Cover Change Continued:
LEDAPS: Landsat Ecosystem Disturbance Adaptive Processing System Maps of surface reflectance for 1975, 1990, and 2000, and forest disturbance since 1975 for the United States and Canada. Reflectance and Forest Disturbance and Regrowth Data Products for North America

Remote Sensing: Biophysical Data

Data Center Description Data Sets
Land Processes Distributed Active Archive Center (LP DAAC) MODIS land products derived from data acquired by the Terra and Aqua satellites. Terra & Aqua MODIS Vegetation Indices
Terra & Aqua MODIS LAI/FPAR
Terra & Aqua MODIS Gross Primary Vegetation Productivity
Remote Sensing/Biophysical Data Continued:
Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC), MODIS Land Product Subsets MODIS land subsets by product, site, map server, or Google Earth. Also customized North American subsets for user-defined area and time period. Global MODIS Subsetting and Visualization Tool
MODIS Data for Selected Field Sites
North American MODIS Subsetting and Visualization Tool
Remote Sensing/Biophysical Data Continued:
Level 1 and Atmosphere Archive and Distribution System (LAADS) Search, order, and download MODIS level 1 and atmosphere data products. Products may be subset by parameter, area, or band, mosaiced, reprojected, or masked. Search for TERRA and AQUA NACP 8-day and Annual Tiled Products for NACP [MOD09A1G_EVI (EVI), MOD09A1G_NDVI (NDVI), MOD09A1P_EVI and MOD09A1P_NDVI (Phenology for EVI and NDVI), MOD15A2GFS (LAI and FPAR), MOD15A2PHN (Phenology for LAI and FPAR), etc]
Download MODIS NCAP Data from LAADS FTP Site

Remote Sensing: Radiation Data

Data Center Description Data Sets
Land Processes Distributed Active Archive Center (LP DAAC) Higher-level processing and distribution of ASTER data, and the distribution of MODIS land products derived from data acquired by the Terra and Aqua satellites. Terra ASTER Routine Data Products
Terra ASTER On-Demand Data Products
Terra & Aqua MODIS Surface Reflectance
Terra & Aqua MODIS Land Surface Temperature and Emissivity
Terra & Aqua MODIS Bidirectional Reflectance Distribution Function (BRDF)/Albedo
Remote Sensing/Radiation Data Continued:
Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC), MODIS Land Product Subsets MODIS land subsets by product, site, map server, or Google Earth. Also customized North American subsets for user-defined area and time period. Global MODIS Subsetting and Visualization Tool
MODIS Data for Selected Field Sites
North American MODIS Subsetting and Visualization Tool

Biomass

Data Center Description Data Sets
Earth Observation for Sustainable Development of Forests (EOSD) (Canada) National maps of Canadian forest biomass (in progress). Forest Biomass
Biomass Continued:
National Forest Information System (NFIS) A distributed network of servers and applications that allow access to data on Canada's forests, vegetation, imagery, protected areas, etc. held by independent agencies. NFIS Public Portal
NFIS Province and Territory Portals
NFIS Themed Portals
NFIS Scientific Maps (restricted access)
CFSNet Portals (restricted access)
Biomass Continued:
Forest Inventory and Analysis Spatial Data Services (FIA SDS) Connects geospatial data from interested parties with geospatial data from the confidential FIA plot location database. FIA Spatial Data Services (order information)
Forest Inventory Mapmaker version 2.1
Biomass Continued:
NRCS National Cartography and Geospatial Center Provides a geospatial data warehouse to acquire, integrate, distribute, and assist in the review and certification of geospatial data. Natural Resources Inventory (NRI)
USGS Digital Raster Graphics (DRG)
NRCS Geospatial Data Gateway

Crop Inventory

Data Center Description Data Sets
FAO Country Profiles and Mapping Information System Information retrieval tool to access FAO's vast global agriculture and development data archive, catalogued by country. FAO Country Profile Selection
Specialized Country Profiles and Information Systems
Crop Inventory Continued:
USDA National Agricultural Statistics Service (NASS) Data on crop production and yields, chemical use, and other agricultural statistics. U.S. Crops and Plants: Search by Commodity
NASS Pre-Extracted Data by Year and by Crop
NASS Historical Statistics

Fire Data

Data Center Description Data Sets
Canadian Wildland Fire Information System (CWFIS) Daily fire weather and fire behavior maps year-round and hot spot maps throughout the forest fire season. CWFIS Interactive Map
CWFIS Current Conditions
CWFIS Fire Weather Map
CWFIS Fire Behavior Map
CWFIS Fire M3 Hotspots
Regional Satellite Images of Major Wildfire and Smoke Events
Fire Data Continued:
LANDFIRE Comprehensive maps and data describing vegetation, wildland fuel, and fire regimes across the United States. LANDFIRE National Products
LANDFIRE Rapid Assessment
LANDFIRE National Vegetation Dynamics Models
Fire Data Continued:
National Interagency Fire Center (NIFC) Wildland fire news, reports, statistics, and maps. Wildland Fire Statistics
Wildland Fire Maps

National Wildland Fire Incident Information System (InciWeb)

Flux Tower

Data Center Description Data Sets
AmeriFlux: Long-term Flux Measurement Network of the Americas Continuous observations of ecosystem level exchanges of CO2, water, energy and momentum spanning diurnal, synoptic, seasonal, and interannual time scales from North American sites. AmeriFlux Network Data
Flux Tower Continued:
FLUXNET: Integrated Worldwide CO2 Flux Measurements Eddy covariance measurements of CO2, water vapor, and energy exchanges between terrestrial ecosystem and atmosphere. FLUXNET Gap-Filled Flux File Interface
FLUXNET Long-Term Climate Data
FLUXNET Archived Flux Data Sets
FLUXNET Site Data
FLUXNET Web Map Server
Flux Tower Continued:
FLUXNET-Canada Flux and associated meteorological and ecological data from Canadian FLUXNET sites. FLUXNET Canada Data Portal
Flux Tower Continued:
USDA Agricultural Research Service, Global Change National Program A network of 30 sites for measuring CO2 exchange in range, pasture and cropland sites and examining how management influences this exchange. AgriFlux / Rangeland Flux Network (data not available)

Aircraft Flux

Data Center Description Data Sets
NASA Terrestrial Ecology Program A collection of airborne remote sensing data sets to advance understanding of the carbon balance in North America. AVIRIS: Airborne Visible/Infrared Imaging Spectrometer
COBRA: CO2 Budget and Regional Airborne Study
LVIS: Laser Vegetation Imaging Sensor

Emissions

Data Center Description Data Sets
Carbon Dioxide Information Analysis Center (CDIAC) CO2 and trace gas emissions data. Fossil-Fuel CO2 Emissions
Trace Gas Emissions
Emissions Continued:
NOAA Earth System Research Laboratory, Global Monitoring Division, Carbon Cycle Greenhouse Gases Group (CCGG) A system to keep track of carbon dioxide uptake and release at the Earth's surface over time. CarbonTracker
Emissions Continued:
Purdue University, Department of Earth and Atmospheric Sciences, Carbon Group Quantification and characterization of the global carbon cycle with emphasis on exchanges of CO2 with the terrestrial biosphere and the fossil fuel sources of CO2 to the atmosphere. Carbon Inverse Modeling (TransCom)
Vulcan
Hestia
Climate Variability and Carbon

Soils

Data Center Description Data Sets
Canadian Soil Information System (CanSIS) National archive for land resources information and soil, landscape, and climatic data for all of Canada. National Soil DataBase (NSDB)
National Ecological Framework (EcoZones, EcoRegions, and EcoDistricts)
Soil Landscapes of Canada (SLC) (Data Sets) (Map Viewer for Version 3.0)
Canada Land Inventory (CLI)
Detailed Soil Surveys
On-line Mapping Applications and Open Geospatial Web Services
Soils Continued:
Center for Sustainability and the Global Environment (SAGE) Data for understanding of the impacts of land management on soil carbon and nitrogen storage in southern Wisconsin. Soil Carbon & Nitrogen Database
Soils Continued:
Penn State Center for Environmental Informatics, Soil Information for Environmental Modeling and Ecosystem Management Provides soil information in understandable forms which can be used by non-soil scientists. CONUS-SOIL
USDA-NRCS State Soil Geographic Database (STATSGO)
Soils Continued:
USDA NRCS Soils Soil survey data, reports and publications throughout the nation Soil Survey
Soil Use (soil interpretations)
Soil Data Viewer
Soil Series Extent Mapping Tool
Soils Continued:
USDA NRCS National Cartography and Geospatial Center Provides a geospatial data warehouse to acquire, integrate, distribute, and assist in the review and certification of geospatial data. Soil Data Mart
Soil Survey Geographic (SSURGO) Database
U.S. General Soil Map (STATSGO)

Permafrost / Freeze Thaw

Data Center Description Data Sets
Frozen Ground Data Center - NSIDC Data and metadata describing permafrost and frozen ground. Frozen Ground Data Sets
Frozen Ground Maps
Circumpolar Active-Layer Permafrost System (CAPS)

Atmospheric Carbon Dioxide

Data Center Description Data Sets
NOAA Earth System Research Laboratory, Global Monitoring Division, Carbon Cycle Greenhouse Gases Group (CCGG) Spatial and temporal distributions of carbon-cycle gases based on measurements from land and sea surface sites and aircraft, and continuous measurements from baseline observatories and tall towers. Atmospheric Carbon Dioxide Measurements
Interactive Atmospheric Data Visualization
Cooperative Air Sampling Network
Observatory Measurements
Tall Tower Measurements
Aircraft Measurements
GLOBALVIEW
Atmospheric Carbon Dioxide Continued:
Carbon Dioxide Information Analysis Center (CDIAC) Atmospheric concentrations of CO2 and other radiatively active gases and related data sets. Atmospheric Trace Gases, Carbon Isotopes, Radionuclides, and Aerosols
Carbon Cycle Data Sets
Terrestrial Carbon Sequestration
Vegetation Response to CO2 and Climate
Atmospheric Measurements of Climate-Relevant Species
Atmospheric Carbon Dioxide Continued:
NCAR Earth Observing Laboratory, Research Aviation Facility Automated instrumentation output and diagnostics. Regional Atmospheric Continuous CO2 Network in the Rocky Mountains (Rocky RACCOON)
Atmospheric Carbon Dioxide Continued:
Penn State Meteorology and Atmospheric Science Data from studies on the fundamental properties of atmospheric and oceanic chemistry and transport. ChEAS (Chequamegon Ecosystem Atmosphere Study)
Ring 2 (High-precision, High-accuracy CO2 Mixing Ratio Measurements in Support of the North American Carbon Program Mid Continent Intensive)

Atmospheric Transport

Data Center Description Data Sets
NOAA/NWS National Centers for Environmental Prediction, Climate Prediction Center Atmospheric analyses using historical data (1948 onwards) and analyses of the current atmospheric state. NCEP/NCAR Global Reanalysis (GR) Climate Data Assimilation System (CDAS) Data Set
NCEP/NCAR Global Reanalysis (GR) Data Sets via NCEP NOMADS Site
NCEP/NCAR North American Regional Reanalysis (NARR)
NCEP/NARR North American Regional Reanalysis (NARR) Archive at NCAR
Atmospheric Transport Continued:
Center for Ocean-Land-Atmosphere Studies (COLA), Weather and Climate Data Center Precipitation and surface temperature analyses and forecasts for North American regions and for selected regions worldwide. Analyses of Current Conditions (NOAA ETA Reanalysis)
Weather Forecasts (from the AVN and NAM models)
Short-Term Climate Outlooks
Atmospheric Transport Continued:
NOAA Earth System Research Laboratory (ESRL), Global Systems Division Real-time and archived observational and weather forecast data sets. Data analysis/assimilation systems. Data from satellites, radar, and other observing systems analyzed using many different operational forecast models. Rapid Update Cycle (RUC)
Online Databases (recent radiosonde (RAOB) data; national precipitation data)
Real-time Data (ground-based GPS integrated precipitable water; NOAA Profiler Network real-time data; surface observations)
Retrospective Data (hourly precipitation dataset (HPD); North American radiosonde data since 1946)
Meteorological Assimilation Data Ingest System (MADIS)
Atmospheric Transport Continued:
European Center for Medium Range Weather Forecasts (ECMWF) Medium-range weather forecasts and meteorological data products. ECMWF 40 Years Re-Analysis (ERA-40) Data Server Data Set
ERA-40 Atlas
ERA-40 Datasets Archived by NCAR Data Support Section

Weather

Data Center Description Data Sets
DAYMET U.S. Data Center A model that generates daily surfaces of temperature, precipitation, humidity, and radiation over large regions of complex terrain in the cotermious United States. DAYMET Climatological Summaries and Daily Data
Climatological Summary Maps Over the Coterminous United States
Daily Surface Weather Data at a Single Point
Weather Continued:
Geospatial One Stop Data Center - U.S. Maps and Data Records about the dynamic processes and phenomena of the atmosphere. Atmosphere and Climate
Weather Continued:
Various meteorological data elements that over time describe the climate of a location or region. NOAA NCDC Land-based Data System Land-Based Climate Data and Products (observational data sets, data summaries, gridded data, GIS interface, and other applications)
Land-Based Climate Research and Monitoring Data
Climate Data Online (CDO) System
Unedited Local Climatological Data for the United States
Climate Atlas of the United States, Version 2.0 (CD ROM)
Weather Continued:
NOAA NCDC Weather/Climate Events Summaries of weather and climate events (temperature, precipitation, hurricane events, and snow extremes). Weather/Climate Events Data and Products (events database, maps, tables, reports; climate normals data and maps; climate summaries, etc)
Weather/Climate Events Research and Monitoring Data
Weather Continued:
NOAA NCDC Climate Monitoring U.S. temperature, precipitation, drought, snow, network, hurricane, tornado data and more. Climate Monitoring Data Reports and Products (U.S. temperature, precipitation, drought, and snow data; climate, network, and drought monitoring data sets, etc)
Weather Continued:
NOAA NCDC Upper-Air Lists and searches of upper-air data available from NCDC. Upper-Air Data Products (radiosonde archive and atmospheric temperature data; NOMADS, etc)
Weather Continued:
NOAA NCDC Satellite Services Raw and calibrated satellite radiance data, infrared soundings, tropical cyclone data, and more. Satellite Data and Products (Data from POES, GOES, DMSP, NOAA 2-17, TIROS-N, and other satellites)
Satellite Research and Monitoring Data (data rescue, analyses, reanalysis, and other data products)
Weather Continued:
NOAA NCDC Paleoclimatology Climate reconstructions and primary paleoclimatic proxy data. Climate Reconstructions (reconstructions of past temperature, precipitation, vegetation, streamflow, sea surface temperature, and other climatic or climate-dependent conditions)
Primary Paleoclimatic Proxy Data (past climate and environment data organized by different proxy data types)

Climate Scenarios

Data Center Description Data Sets
Canadian Climate Impacts and Scenarios Climate change scenario maps, data, and tools. Canadian Climate Change Scenarios Network (CCCSN)
Climate Scenarios (geo-referenced data, fine resolution data, and time series data and maps; temperature and precipitation scatter plots; bio-climatic profiles, etc)
Climate Scenarios Continued:
Intergovernmental Panel on Climate Change (IPCC), Data Distribution Centre (DDC) Baseline and climate change scenario data for representing the evolution of climatic, socio-economic, and other environmental conditions. Observed Climate Data Sets (CRU global climate data set, other gridded global land climate data sets, and some analysis and plotting tools)
Climate Model Output Summary Data (period-averages)
GCM Experiment Data Archive (monthly mean data available at DDC and information on the models used)
Socio-Economic Data and Scenarios (baseline and scenario data related to population, economic development, technology and natural resources for use in climate impact assessments)
Environmental Data and Scenarios (baseline and scenario data for a range of non-climate conditions in the atmospheric, aquatic and terrestrial environments)

Hydrology

Data Center Description Data Sets
USGS National Water Information System (NWISWeb) Water-resources data collected at approximately 1.5 million sites in all 50 States and the District of Columbia. USGS Real-Time Water Data for the Nation (daily streamflow conditions)
USGS Water-Data Site Information for the Nation (links to all water data available for individual sites)
USGS Surface-Water Data for the Nation (stream level, streamflow (discharge), reservoir and lake level, surface-water quality, and rainfall data)
USGS Ground-Water Data for the Nation (ground-water levels in wells)
USGS Water-Quality Data for the Nation (chemical and physical data for streams, lakes, springs, and wells)
Hydrology Continued:
Meteorological Service of Canada, National Water Data Archive Streamflow, water level, and sediment data for over 2500 active and 5500 discontinued hydrometric monitoring stations. Canadian Hydrological Data (HYDAT)
Hydrology Continued:
Geobase (Canada) Geospatial data for Canada. National Hydro Network (NHN)
Hydrology Continued:
Geospatial One Stop Data Center - U.S. Maps and Data Data on