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Title	National Water Level Observation Network [NWLON]
Lead	National Oceanic and Atmospheric Administration [NOAA]
Description	NOAAâ€™s Center for Operational Oceanographic Products and Services (CO-OPS) maintains the National Water Level Observation Network (NWLON), an observation network with more than 200 permanent water level stations on the coasts and Great Lakes. CO-OPS maintains three core observation and one modeling system. The National Water Level Observation Network (NWLON) is the foundation of the comprehensive system for observing, communicating, and assessing the impact of changing water levels nationwide. This system allows NOAA to provide the official tidal predictions for the nation. Accurate water level data is critical for safe and efficient marine navigation and for the protection of infrastructure along the coast. The NWLON also provides the national standards for tide and water level reference datums used for nautical charting, coastal engineering, international treaty regulation, and boundary determination. The NWLON is also widely recognized as the key federal component of the Integrated Ocean Observing System (IOOS).
Science topics	Stage, Tides, Waves, Flood, Sea level rise
Updated	April 29, 2022

Title	Moderate resolution imaging spectro radiometer MODIS
Lead	National Aeronautics and Space Administration [NASA]
Description	MODIS (or Moderate Resolution Imaging Spectroradiometer) is a key instrument aboard the Terra (originally known as EOS AM-1) and Aqua (originally known as EOS PM-1) satellites. Terra's orbit around the Earth is timed so that it passes from north to south across the equator in the morning, while Aqua passes south to north over the equator in the afternoon. Terra MODIS and Aqua MODIS are viewing the entire Earth's surface every 1 to 2 days, acquiring data in 36 spectral bands, or groups of wavelengths (see MODIS Technical Specifications). These data will improve our understanding of global dynamics and processes occurring on the land, in the oceans, and in the lower atmosphere. MODIS is playing a vital role in the development of validated, global, interactive Earth system models able to predict global change accurately enough to assist policy makers in making sound decisions concerning the protection of our environment.
Science topics	Water operations / exports, Water storage, Water conveyance / infrastructure, Forest harvesting, Agriculture, Urban development, Recreation & tourism, Surface water / flow, Direction, Tides, Residence time, Waves, Flood, Drought, Mudflats, Intertidal / transition zones, Above-highwater refugia, Main channels, Sloughs, Backwater, Submerged aquatic vegetation, Floating aquatic vegetation, Seasonally flooded, Open water, Managed ponds, Riparian wildlife, Forests, Non-forested vegetation, Delta islands, Pacific flyway, Saltwater / freshwater marshes, Habitat, Energy and mines, Water use / demand
Updated	April 29, 2022

Title	Landsat Science Program
Lead	Goddard Space Flight Center
Description	Multispectral earth imaging satellite acquires data for earth observation. Numerous applications and extensive history of success with environmental and land use programs.
Science topics	Levees, Dredging, Forest harvesting, Agriculture, Urban development, Roads and bridges, Rail lines, Docks and ports, Surface water / flow, Groundwater, Stage, Direction, Tides, Residence time, Waves, Flood, Drought, Wildfire, Harmful algal blooms HAB, Phytoplankton, Suspended sediment, Turbidity, Mudflats, Intertidal / transition zones, Above-highwater refugia, Main channels, Sloughs, Backwater, Submerged aquatic vegetation, Floating aquatic vegetation, Seasonally flooded, Open water, Managed ponds, Riparian wildlife, Forests, Non-forested vegetation, Delta islands, Pacific flyway, Saltwater / freshwater marshes, Habitat, Energy and mines, Snowpack / snow water equivalent SWE
Updated	April 29, 2022

Title	Sentinel Satellite
Lead	European Space Agency
Description	Earth observation using multispectral imagery from satellites. Especially suitable for monitoring changes in land cover.
Science topics	Levees, Dredging, Forest harvesting, Agriculture, Urban development, Recreation & tourism, Surface water / flow, Groundwater, Stage, Velocity, Direction, Tides, Residence time, Waves, Flood, Drought, Land elevation, Subsidence, Sea level rise, Seismicity, Wildfire, Air temperature, Precipitation, Wind, Extreme heat, Extreme storms, Suspended sediment, Water temperature, Mudflats, Intertidal / transition zones, Above-highwater refugia, Main channels, Sloughs, Backwater, Submerged aquatic vegetation, Floating aquatic vegetation, Seasonally flooded, Open water, Managed ponds, Riparian wildlife, Forests, Non-forested vegetation, Delta islands, Pacific flyway, Saltwater / freshwater marshes, Habitat, Energy and mines, Snowpack / snow water equivalent SWE, Water intakes, fish screens & passage
Updated	April 29, 2022

Title	Physical Oceanographic Real-Time System [PORTS]
Lead	National Oceanic and Atmospheric Administration [NOAA]
Description	PORTSAÂ® is an integrated system of sensors concentrated in seaports that provide commercial vessel operators with accurate and reliable real-time information about environmental conditions. PORTAÂ® measures and disseminates observations, predictions and nowcast/forecasts for water levels, currents, bridge air gap, salinity and meteorological parameters (e.g., winds, waves, atmospheric pressure, visibility, air and water temperatures). This data improves navigation safety by reducing groundings and collisions by up to 60% for commercial and recreational vessels and preventing oil spills. It can also increase shipping efficiency by reducing transit delays and allowing mariners to optimize their cargo load. Mariners need these data, tools, and services to make critical navigation decisions, especially as significantly larger vessels transit through U.S. ports because of the Panama Canal expansion.
Science topics	Docks and ports, Tides, Waves, Air temperature, Wind, Salinity, Water temperature, Main channels, Sloughs, Open water, Riparian wildlife, Environmental drivers, Vessels and shipping channels
Updated	April 29, 2022

Science activities

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Organizations and funding programs

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National Water Level Observation Network [NWLON]

Moderate resolution imaging spectro radiometer MODIS

Landsat Science Program

Sentinel Satellite

Physical Oceanographic Real-Time System [PORTS]