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Description

The Inland Waters dataset (ILW) provides data for lakes and other water bodies across the contiguous United States (CONUS) and Alaska. ILW significantly reduces the processing effort required by end users and is a standardized community resource for lake and reservoir algorithm development and performance assessment. The data is provided for 15,450 CONUS waterbodies with a size of at least one 300 m pixel and over 2,300 resolvable lakes with sizes greater than three 300 m pixels. Alaska has 5,874 lakes resolvable lakes. ILW was developed in collaboration with the Cyanobacteria Assessment Network (CyAN). Additional inland water details and resources, including maps of resolvable lakes and additional inland water products, such as true color imagery, are available at the CyAN site.

Version Description

Inland Waters Dataset, Version 5.0

Product Summary

Platforms
ENVISAT
Instruments
MERIS
Spatial Extent

N: 90 S: -90 E: 180 W: -180

Geographic Region
UNITED STATES OF AMERICA
Coordinate System
CARTESIAN
Granule Spatial Representation
CARTESIAN
Temporal Extent
2002-03-21 to 2012-05-09
Data Partner
Ocean Biology Processing Group (OBPG) ,
Ocean Biology Distributed Active Archive Center (OB.DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA (NASA/GSFC/SED/ESD/GCDC/OB.DAAC)
Concept ID
C3433948168-OB_CLOUD
Data State
COMPLETE
Number of Files/Granules
8142
Processing Level
3
Published
Updated
Science Keywords
Lakes/Reservoirs ,
Lake/Pond ,
Coastal ,
CYANOBACTERIA (BLUE-GREEN ALGAE) ,
Marine Environment Monitoring ,
Coastal Processes ,
Aquatic Sciences ,
Chlorophyll Concentrations ,
Phytoplankton ,
Groundwater Management

Documents

Variables

Variables are a set of physical properties whose values determine the characteristics or behavior of something. For example, temperature and pressure are variables of the atmosphere. Parameters and variables can be used interchangeably. Variable level attributes provide individual information for each variable.

The Name in this table is the variable name. Fill value indicates missing or undefined data points in a variable. Valid range is the range of values the variable can store. Scale factor is used to increase or decrease the size of an object and can be used to correct for distortion. For questions on a specific variable, please use the Earthdata Forum.

Name Description Units Data Type Fill Value Valid Range Scale Factor
CI_cyano Cyanobacteria Index - cyanobacteria only Wynne, Stumpf algorithm 2013 sr^-1 float32 -32767 4.9999998736894E-5 to 0.050000000745058 N/A
lat Latitude degrees_north float32 -999 -90 to 90 N/A
lon Longitude degrees_east float32 -999 -180 to 180 N/A
palette palette N/A uint8 N/A N/A N/A
rhos_413 Surface reflectance at 413 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_443 Surface reflectance at 443 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_490 Surface reflectance at 490 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_510 Surface reflectance at 510 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_560 Surface reflectance at 560 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_620 Surface reflectance at 620 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_665 Surface reflectance at 665 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_681 Surface reflectance at 681 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_709 Surface reflectance at 709 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_754 Surface reflectance at 754 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_865 Surface reflectance at 865 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
rhos_885 Surface reflectance at 885 nm N/A float32 -32767 -0.050000000745058 to 1 N/A
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