USGS - Gulf of Mexico Water Dashboard

Data Layers
Map Legend

USGS Streams: Statistical Rank
	All-Time Low for this Day	0^th percentile (minimum)
	Much Below Normal	<10^th percentile
	Below Normal	10^th – 24^th percentile
	Normal	25^th – 75^th percentile
	Above Normal	76^th – 90^th percentile
	Much Above Normal	>90^th percentile
	All-Time High for this Day	100^th percentile (maximum)
	Above National Weather Service Flood Stage
	Not Flowing	0 cubic feet per second
	Not Ranked	See Comments
Comments: Marker color indicates the current streamflow condition. Categories are based on the percentile of existing streamflow record on this day-of-the-year. A streamgage is not ranked when there is insufficient streamflow record to compute statistics, the stream is not flowing, or a current streamflow measurement is unavailable. Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Streams: Flow Magnitude
	0 cubic feet per second (not flowing)
	0 – 10 cubic feet per second
	10 – 100 cubic feet per second
	100 – 1,000 cubic feet per second
	1,000 – 10,000 cubic feet per second
	10,000 – 100,000 cubic feet per second
	> 100,000 cubic feet per second
Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Streams: Stage Rate-of-Change
	Rising > 1 foot/hour
	Rising 0.5 – 1 foot/hour
	Rising 0.05 – 0.5 foot/hour
	Changing < 0.05 foot/hour
	Falling 0.05 – 0.5 foot/hour
	Falling 0.5 – 1 foot/hour
	Falling > 1 foot/hour
	Data Unavailable
Comments: Rate-of-change is computed by subtracting the two most recent measurements divided by the elapsed time and converting to feet per hour. Data at most stations are collected at 15 minute intervals. Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Streams: Above Flood Stage
	Current stream stage above National Weather Service flood stage
Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Streams: Not Flowing
	Steam not flowing	0 cubic feet per second
Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Lakes: Statistical Rank
	All-Time Low for this Day	0^th percentile (minimum)
	Much Below Normal	<10^th percentile
	Below Normal	10^th – 24^th percentile
	Normal	25^th – 75^th percentile
	Above Normal	76^th – 90^th percentile
	Much Above Normal	>90^th percentile
	All-Time High for this Day	100^th percentile (maximum)
	Not Ranked	See Comments
Comments: Marker color indicates the current lake elevation condition. Categories are based on the percentile of existing lake elevation record on this day-of-the-year. A gage is not ranked when there is insufficient lake elevation record to compute statistics or a current lake elevation measurement is unavailable. Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Lakes: Water Level Rate-of-Change
	Rising > 0.5 foot/hour
	Rising 0.05 – 0.5 foot/hour
	Rising 0.02 – 0.05 foot/hour
	Changing < 0.02 foot/hour
	Falling 0.02 – 0.05 foot/hour
	Falling 0.05 – 0.5 foot/hour
	Falling > 0.5 foot/hour
	Data Unavailable
Comments: Rate-of-change is computed by subtracting the two most recent measurements divided by the elapsed time and converting to feet per hour. Data at most stations are collected at 15 minute intervals. Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Wells: Statistical Rank
	All-Time Low for this Day	0^th percentile (minimum)
	Much Below Normal	<10^th percentile
	Below Normal	10^th – 24^th percentile
	Normal	25^th – 75^th percentile
	Above Normal	76^th – 90^th percentile
	Much Above Normal	>90^th percentile
	All-Time High for this Day	100^th percentile (maximum)
	Not Ranked	See Comments
Comments: Marker color indicates the current condition based on the well's depth-to-water measurement. Categories are based on the percentile of existing depth-to-water record on this day-of-the-year. A well is not ranked when there is insufficient depth-to-water record to compute statistics or a current depth-to-water measurement is unavailable. Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Wells: Depth to water level
	0 – 50 feet below land surface
	50 – 100 feet below land surface
	100 – 150 feet below land surface
	150 – 200 feet below land surface
	200 – 250 feet below land surface
	> 250 feet below land surface
Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Wells: Water Level Rate-of-Change
	Rising > 6 inches/hour
	Rising 1 – 6 inches/hour
	Rising 0.5 – 1 inches/hour
	Changing < 0.5 inches/hour
	Falling 0.5 – 1 inches/hour
	Falling 1 – 6 inches/hour
	Falling > 6 inches/hour
	Data Unavailable
Comments: Rate-of-change is computed by subtracting the two most recent measurements divided by the elapsed time and converting to inches per hour. Data at most stations are collected at 15 minute intervals. Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

USGS Rain Station
	None	0 inches/hour
	Light	0 – 0.1 inches/hour
	Moderate	0.1 – 0.4 inches/hour
	Heavy	0.4 – 2.0 inches/hour
	Violent	2.0 – 4.0 inches/hour
	Extreme	> 4.0 inches/hour
	Not Ranked	Data Unavailable
Comments: Marker color is based on the most recent rainfall rate observed at the station. Data Source: USGS Water Data for the Nation Click points in this layer to access real-time data and station information.

Radar
	20 dBZ	Trace amounts of precipitation
	30 dBZ	Approx. 0.1 inch/hour
	36 dBZ	Approx. 0.25 inch/hour
	41 dBZ	Approx. 0.5 inch/hour
	47 dBZ	Approx. 1.25 inch/hour
	52 dBZ	Approx. 2.5 inch/hour
	55 dBZ	Approx. 4 inch/hour
	60 dBZ	Approx. 8 inch/hour
	65 dBZ	Approx. 16 inch/hour or more
Comments: Weather radar measures base reflectivity (dBZ) and does not directly measure actual precipitation. Precipitation rates stated above are provided as rough estimates only. Data Source: Iowa Environmental Mesonet (IEM)

Total Precipitation
	1 inch	6 inches
	2 inches	7 inches
	3 inches	8 inches
	4 inches	9 inches
	5 inches
Comments: Values represent estimated accumulated precipitation over the specified time interval. Data Source: Iowa Environmental Mesonet (IEM)

Total Precipitation
	0.25 inches	4 inches
	0.5 inches	5 inches
	0.75 inches	7 inches
	1 inch	10 inches
	2 inches	15 inches
	3 inches
Comments: Values represent estimated accumulated precipitation over the specified time interval. Data Source: Iowa Environmental Mesonet (IEM)

Precipitation Forecast
	0.01 inches	2.00 inches
	0.10 inches	2.50 inches
	0.25 inches	3.00 inches
	0.50 inches	4.00 inches
	0.75 inches	5.00 inches
	1.00 inches	7.00 inches
	1.25 inches	10.00 inches
	1.50 inches	15.00 inches
	1.75 inches	20.00 inches
Comments: Values are Quantitative Precipitation Forecasts (QPFs) defined as the amount of liquid precipitation expected to fall in a defined period of time. QPFs are estimated as areal averages on a 20- by 20-kilometer grid. Data Source: National Weather Service (NWS)

Cloud Cover: Visible
Geostationary Operational Environmental Satellite (GOES) North American Visible (~1km) Comments: Depicts reflected solar radiation. Clouds typically appear white while land and water surfaces appear in shades of gray or black. The visible spectrum offers higher resolution than the infrared spectrum but is only available during daylight times. Data Source: Iowa Environmental Mesonet (IEM)

Cloud Cover: Visible

Geostationary Operational Environmental Satellite (GOES) North American Visible (~1km)

Comments: Depicts reflected solar radiation. Clouds typically appear white while land and water surfaces appear in shades of gray or black. The visible spectrum offers higher resolution than the infrared spectrum but is only available during daylight times.

Data Source: Iowa Environmental Mesonet (IEM)

Cloud Cover: Infrared
Geostationary Operational Environmental Satellite (GOES) North American Infrared (~4km) Comments: Depicts heat energy, where colder objects (such as higher cloud tops) are white and warmer objects (such as lower cloud layers) are shades of gray or black. The infrared spectrum has lower resolution than the visible spectrum but is available both day- and nighttime. Data Source: Iowa Environmental Mesonet (IEM)

Cloud Cover: Infrared

Geostationary Operational Environmental Satellite (GOES) North American Infrared (~4km)

Comments: Depicts heat energy, where colder objects (such as higher cloud tops) are white and warmer objects (such as lower cloud layers) are shades of gray or black. The infrared spectrum has lower resolution than the visible spectrum but is available both day- and nighttime.

Data Source: Iowa Environmental Mesonet (IEM)

Cloud Cover: Water Vapor
Geostationary Operational Environmental Satellite (GOES) North American Water Vapor (~4km) Comments: Depicts electromagnetic radiation in wavelengths reflected by water vapor. Typically, white indicates a moist layer or clouds in the upper troposphere, while shades of gray or black indicate the Earth or a dry layer in the middle troposphere. Data Source: Iowa Environmental Mesonet (IEM)

Cloud Cover: Water Vapor

Geostationary Operational Environmental Satellite (GOES) North American Water Vapor (~4km)

Comments: Depicts electromagnetic radiation in wavelengths reflected by water vapor. Typically, white indicates a moist layer or clouds in the upper troposphere, while shades of gray or black indicate the Earth or a dry layer in the middle troposphere.

Data Source: Iowa Environmental Mesonet (IEM)

Watches, Warnings, and Advisories
	Warning
	Watch
	Advisory
	Statement
	Other
Comments: A watch indicates that conditions are favorable for the particular weather event in and near the Watch area and may pose a risk to life and property. A warning or advisory indicates that a particular weather event is imminent or occurring. An advisory is issued if the weather event will lead to nuisance conditions, while a warning is issued for significant weather events which will pose a risk to life and property. More information. Data Source: National Weather Service (NWS) Click features in this layer to view event details and access the National Weather Service report.

Watersheds
	Watershed boundary
Comments: Watershed boundaries are determined by hydrologic units. Zooming the map out shows more generalized (regional) watersheds while zooming the map in shows more detailed (local) watersheds. Data Source: USGS National Water Information System: Mapper

Watersheds

Watershed boundary

Comments: Watershed boundaries are determined by hydrologic units. Zooming the map out shows more generalized (regional) watersheds while zooming the map in shows more detailed (local) watersheds.

Data Source: USGS National Water Information System: Mapper

Rivers
	Waterbody
	Stream
	Intermittent Stream
Comments: Depicts the National Hydrography Dataset (NHD) that encodes information about naturally occurring and constructed bodies of surface water (lakes, ponds, and reservoirs) and paths through which water flows (canals, ditches, streams, and rivers). Data Source: USGS The National Map

Map Overlay: Cities & Borders
Comments: This overlay includes place names and county boundaries. Data Source: ESRI ArcGIS Online

Map Overlay: Cities & Borders

Comments: This overlay includes place names and county boundaries.

Data Source: ESRI ArcGIS Online

Map Overlay: Transportation
Comments: This overlay includes highways, roads, railroads, and airports. Data Source: ESRI ArcGIS Online

Map Overlay: Transportation

Comments: This overlay includes highways, roads, railroads, and airports.

Data Source: ESRI ArcGIS Online

Map Overlay: Reference
Comments: This overlay includes administrative boundaries, cities, water features, physiographic features, parks, landmarks, highways, roads, railways, and airports. Data Source: ESRI ArcGIS Online

Map Overlay: Reference

Comments: This overlay includes administrative boundaries, cities, water features, physiographic features, parks, landmarks, highways, roads, railways, and airports.

Data Source: ESRI ArcGIS Online

Base Map: Topographic
Comments: This base map includes administrative boundaries, cities, water features, physiographic features, parks, landmarks, highways, roads, railways, and airports. Data Source: ESRI ArcGIS Online

Base Map: Topographic

Comments: This base map includes administrative boundaries, cities, water features, physiographic features, parks, landmarks, highways, roads, railways, and airports.

Data Source: ESRI ArcGIS Online

Base Map: Imagery
Comments: This base map provides 0.3-meter-resolution satellite and aerial imagery in the continental United States. Data Source: ESRI ArcGIS Online

Base Map: Imagery

Comments: This base map provides 0.3-meter-resolution satellite and aerial imagery in the continental United States.

Data Source: ESRI ArcGIS Online

Base Map: Streets
Comments: This base map includes highways, major roads, minor roads, one-way arrow indicators, railways, water features, administrative boundaries, cities, parks, and landmarks. Data Source: ESRI ArcGIS Online

Base Map: Streets

Comments: This base map includes highways, major roads, minor roads, one-way arrow indicators, railways, water features, administrative boundaries, cities, parks, and landmarks.

Data Source: ESRI ArcGIS Online

Base Map: Terrain
Comments: This base map includes hill shading, natural vegetation, and generalized roads. Data Source: Stamen

Base Map: Terrain

Comments: This base map includes hill shading, natural vegetation, and generalized roads.

Data Source: Stamen

Base Map: Light
Comments: This base map provides a light, neutral background with minimal colors, labels, and features to give primary focus to the data layer content. Data Source: ESRI ArcGIS Online

Base Map: Light

Comments: This base map provides a light, neutral background with minimal colors, labels, and features to give primary focus to the data layer content.

Data Source: ESRI ArcGIS Online

Base Map: Dark
Comments: This base map provides a dark, neutral background with minimal colors, labels, and features to give primary focus to the data layer content. Data Source: ESRI ArcGIS Online

Base Map: Dark

Comments: This base map provides a dark, neutral background with minimal colors, labels, and features to give primary focus to the data layer content.

Data Source: ESRI ArcGIS Online

Clear Map About

USGS Streams: Statistical Rank

USGS Streams: Flow Magnitude

USGS Streams: Stage Rate-of-Change

USGS Streams: Above Flood Stage

USGS Streams: Not Flowing

USGS Lakes: Statistical Rank

USGS Lakes: Water Level Rate-of-Change

USGS Wells: Statistical Rank

USGS Wells: Depth to water level

USGS Wells: Water Level Rate-of-Change

USGS Rain Station

Radar

Total Precipitation

Total Precipitation

Precipitation Forecast

Cloud Cover: Visible

Cloud Cover: Infrared

Cloud Cover: Water Vapor

Watches, Warnings, and Advisories

Watersheds

Rivers

Map Overlay: Cities & Borders

Map Overlay: Transportation

Map Overlay: Reference

Base Map: Topographic

Base Map: Imagery

Base Map: Streets

Base Map: Terrain

Base Map: Light

Base Map: Dark