A drainage basin is an area that drains all precipitation received as a runoff or base flow (groundwater sources) into a particular river or set of rivers. Canada’s major drainage regions are the Atlantic Ocean, Hudson Bay, Arctic Ocean, Pacific Ocean and Gulf of Mexico. Rivers are organized into networks, each with its own recharge area upstream, and drainage channel and mouth downstream. Networks are ordered from ocean to main river to secondary rivers to streams which correspond to ocean basins, river basins, sub-basins, sub-sub-basins, and so forth. The boundary of a watershed is called a drainage divide.

The Mississippi River is North America’s largest river, flowing over 2,300 miles through America’s heartland to the Gulf of Mexico. The watershed not only provides drinking water, food, industry, and recreation for millions of people, it also hosts a globally significant migratory flyway and home for over 325 bird species. Leading the world in agricultural production, a healthy agricultural sector in the Mississippi River Basin is essential for maintaining the nation’s and the world’s food and fiber supply. USDA Conservation Effects Assessment Project (CEAP) cropland models show that conservation on cropland throughout the entire Mississippi River Basin has reduced nitrogen and sediment loading to the Gulf of Mexico by 28 percent and 45 percent, respectively, over what would be lost without conservation systems in place. With the CCA designation, USDA will build on existing strong partnerships in the basin to accelerate conservation in the 13-state area to continue to reduce nutrient and sediment loading to local and regional water bodies and to improve efficiency in using water supplies, particularly in the southern states. The CCA boundary was identified to harness the partnerships and momentum already established by NRCS’s Mississippi River Basin Healthy Watersheds Initiative (MRBI). With more than 600 partners engaged throughout the initiative area, MRBI has treated over 800,000 acres of agricultural land with systems of practices intended to avoid, control, and trap nutrient and sediment run-off and improve irrigation efficiency. This dataset includes a printer-friendly CCA map and shapefiles for GIS. Resources in this dataset:Resource Title: Mississippi River Basin. File Name: Web Page, url: https://www.nrcs.usda.gov/programs-initiatives/rcpp-regional-conservation-partnership-program/critical-conservation-areas Information about the project and links to a printer-friendly CCA map (PDF, 1.2MB) and shapefiles for GIS (ZIP, 218KB).

This layer includes polygon data showing the outline of the Colorado River Basin hydrological boundaries, with the Mexican hydrological boundaries comprising Baja California and Sonora. Areas that receive Colorado River water are also included and are based on the United States Bureau of Reclamation boundaries. The attributes included are:NameBasin (in which basin area is located)Shape Area (in square degrees of WGS 1984 Global Coordinate System)Shape Length (in degrees of WGS 1984 Global Coordinate System)

This map provides information about the percent capacity of reservoirs, percent median precipitation, and percent median snow water equivalent for sub-basins of the Rio Grande Basin in Colorado, New Mexico, Texas, and Mexico.

The National Water Quality Network (NWQN) for Rivers and Streams includes 113 surface-water river and stream sites monitored by the U.S. Geological Survey (USGS) National Water Quality Program (NWQP). The NWQN represents the consolidation of four historical national networks: the USGS National Water-Quality Assessment (NAWQA) Project, the USGS National Stream Quality Accounting Network (NASQAN), the National Monitoring Network (NMN), and the Hydrologic Benchmark Network (HBN). The NWQN includes 22 large river coastal sites, 41 large river inland sites, 30 wadeable stream reference sites, 10 wadeable stream urban sites, and 10 wadeable stream agricultural sites. In addition to the 113 NWQN sites, 3 large inland river monitoring sites from the USGS Cooperative Matching Funds (Co-op) program are also included in this annual water-quality reporting Web site to be consistent with previous USGS studies of nutrient transport in the Mississippi-Atchafalaya River Basin. This data release contains geo-referenced digital data and associated attributes of watershed boundaries for 113 NWQN and 3 Co-op sites. Two sites, "Wax Lake Outlet at Calumet, LA"; 07381590, and "Lower Atchafalaya River at Morgan City, LA"; 07381600, are outflow distributaries into the Gulf of Mexico. Watershed boundaries were delineated for the portion of the watersheds between "Red River near Alexandria, LA"; 07355500 and "Atchafalaya River at Melville, LA"; 07381495 to the two distributary sites respectively. Drainage area was undetermined for these two distributary sites because the main stream channel outflows into many smaller channels so that streamflow is no longer relative to the watershed area. NWQN watershed boundaries were derived from the Watershed Boundary Dataset-12-digit hydrologic units (WBD-12). The development of the WBD-12 was a coordinated effort between the United States Department of Agriculture-Natural Resources Conservation Service (USDA-NRCS), the USGS, and the Environmental Protection Agency (EPA) (U.S. Department of Agriculture-Natural Resources Conservation Service, 2012). A hydrologic unit is a drainage area delineated to nest in a multi-level, hierarchical drainage system. Its boundaries are defined by hydrographic and topographic criteria that delineate an area of land upstream from a specific point on a river, stream or similar surface waters. The United States is divided and sub-divided into successively smaller hydrologic units identified by a unique hydrologic unit code (HUC) consisting of two to 12 digits based on the six levels of classification in the hydrologic unit system: regions, sub-regions, accounting units, cataloging units, watersheds, and sub-watersheds. NWQN watershed boundaries were delineated by selecting all sub-watershed polygons that flow into the most downstream WBD-12 polygon in which the NWQN site is located. The WBD-12 attribute table contains 8-digit, 10-digit, and 12-digit HUCs which were used to identify which sub-watersheds flow into the watershed pour point at the NWQN site location. When the NWQN site was located above the pour point of the most downstream sub-watershed, the sub-watershed was edited to make the NWQN site the pour point of that sub-watershed. To aid editing, USGS 1:24,000 digital topographic maps were used to determine the hydrologic divide from the sub-watershed boundary to the NWQN pour point. The number of sub-watersheds which are contained within the NWQN watersheds ranged from less than one to nearly 32,000 internal sub-watersheds. Internal sub-watershed boundaries were dissolved so that a single watershed boundary was generated for each NWQN watershed. Data from this release are presented at the USGS Tracking Water Quality page: http://cida.usgs.gov/quality/rivers/home (Deacon and others, 2015). Watershed boundaries delineated for this release do not take into account non-contributing area, diversions out of the watershed, or return flows into the watershed. Delineations are based solely on contributing WBD-12 polygons with modifications done only to the watershed boundary at the NWQN site location pour point. For this reason calculated drainage areas for these delineated watersheds may not match National Water Information System (MWIS) published drainage areas (http://dx.doi.org/10.5066/F7P55KJN). Deacon, J.R., Lee, C.J., Toccalino, P.L., Warren, M.P., Baker, N.T., Crawford, C.G., Gilliom, R.G., and Woodside, M.D., 2015, Tracking water-quality of the Nation’s rivers and streams, U.S. Geological Survey Web page: http://cida.usgs.gov/quality/rivers, https://dx.doi.org/doi:10.5066/F70G3H51. U.S. Department of Agriculture-Natural Resources Conservation Service, 2012, Watershed Boundary Dataset-12-digit hydrologic units: NRCS National Cartography and Geospatial Center, Fort Worth, Tex., WBDHU12_10May2012_9.3 version, accessed June 2012 at http://datagateway.nrcs.usda.gov.

The documentation below is in reference to this items placement in the NM Supply Chain Data Hub. The documentation is of use to understanding the source of this item, and how to reproduce it for updatesTitle: Water Use and Conservation: Technical Reports & DataItem Type: URLSummary: NM Water Use and Conservation Technical Reports & Data: at the state, county, and river basin level. Source: Office of the State EngineerNotes: Prepared by: Uploaded by EMcRae_NMCDCSource: Office of the State Engineer Interstate Stream CommissionFeature Service: https://nmcdc.maps.arcgis.com/home/item.html?id=ec32b24655754ce0841caa6c8e1b109dUID: 68, 44Data Requested: availability of water, water, Water rights for agricultureMethod of Acquisition: Contacted office of State Engineer, was directed to this public webpage and other sources.Date Acquired: May 2022Priority rank as Identified in 2022 (scale of 1 being the highest priority, to 11 being the lowest priority): Tags: PENDING_This URL provides the following: Water Use Technical Reports & DataNew Mexico Water Use by Categories 2015 by Magnuson, Molly L., P.E.; Valdez, Julie M.; Lawler, Charles R.; Nelson, Matt; and Petronis, Laura, New Mexico State Engineer Office, Technical Report 55, May 2019. Updated May 24, 2019New Mexico Water Use by Categories 2010 by Longworth, John W., P.E.; Valdez, Julie M.; Magnuson, Molly L., P.E.; and Richard, Kenneth, New Mexico State Engineer Office, Technical Report 54, October 2013.New Mexico Water Use by Categories 2005 by Longworth, John W., P.E.; Valdez, Julie M.; Magnuson, Molly L., P.E.; Albury, Elisa Sims; and Keller, Jerry; 2008. 2005 Supplemental ReportWater Use by Categories in New Mexico Counties and River Basins, and Irrigated Acreage in 2000 by Brian C. Wilson, P.E., New Mexico State Engineer Office, Technical Report 51, 2003.Water Use by Categories in New Mexico Counties and River Basins, and Irrigated Acreage in 1995 by Brian C. Wilson, P.E., New Mexico State Engineer Office, Technical Report 49, 1997.Water Use by Categories in New Mexico Counties and River Basins, and Irrigated Acreage in 1990 by Brian C. Wilson, P.E., New Mexico State Engineer Office, Technical Report 47, July 1992.This information about water use is presented either by county or by river basin. Select the method you desire below.County DataRiver Basin Data2015 Data by County2015 Data by River Basin2010 Data by County2010 Data by River Basin2005 Data by County2005 Data by River Basin2000 Data by County2000 Data by River Basin1995 Data by County1995 Data by River Basin1990 Data by County1990 Data by River Basin

no abstract provided

Contained within the Atlas of Canada 8.5x11 series maps is a map which was created as a joint effort by The Atlas of Canada, The National Institute of Statistics, Geography and Informatics, Mexico and the National Atlas of the United States under the sponsorship of the commission for environmental cooperation. The map shows the major North American drainage basins, or wateresheds, which drain into the Atlantic Ocean, Hudson Bay, the Arctic Ocean, the Pacific Ocean, the gulf of Mexico and teh Caribbean Sea. Each watershed is shown in its own colour, with subdivisions shown in tonal variations. Areas of internal drainage, which lack outlets to the sea, are shown in grey.

A drainage basin is an area that drains all precipitation received as a runoff or base flow (groundwater sources) into a particular river or set of rivers. Canada’s major drainage regions are the Atlantic Ocean, Hudson Bay, Arctic Ocean, Pacific Ocean and Gulf of Mexico. Rivers are organized into networks, each with its own recharge area upstream, and drainage channel and mouth downstream. Networks are ordered from ocean to main river to secondary rivers to streams which correspond to ocean basins, river basins, sub-basins, sub-sub-basins, and so forth. The boundary of a watershed is called a drainage divide.

This dataset provides Land Cover Land Use (LCLU) in Usumacinta river basin (Mexico). This dataset is one of the products produced under the 2014-2016 World Bank (WBG) European Space Agency (ESA) partnership, and is published in the partnership report: Earth Observation for Sustainable Development, June 2016.

This dataset provides estimates for export and leaching of dissolved inorganic carbon (DIC), dissolved organic carbon (DIC), total organic carbon (TOC), particulate organic carbon (POC), ammonium (NH4+), nitrate (NO3-), and total organic nitrogen (TON) from the Mississippi River Basin (MRB) to the Gulf of Mexico. The estimates are provided for a historical period of 1901-2014, and a future period of 2010-2099 (carbon estimates only) under two scenarios of high and low levels of population growth, economy, and energy consumption, respectively. The estimates are from the Dynamic Land Ecosystem Model 2.0 (DLEM 2.0). These data are applicable to studying how changes in multiple environmental factors (e.g., fertilizer application, land-use changes, climate variability, atmospheric CO2 and N deposition) affect the dynamics of leaching and export to the Gulf of Mexico.

1 Oases of Baja California Sur; 2 Río Yaqui; 3 rivers near Chamela, Jalisco; 4 Río Santiago; 5 Río Armería - Ayuquila; 6 Río Balsas; 7 bodies of water in Guerrero State; 8 Río Atoyac-Verde; 9 Río Tehuantepec; 10 Rivers along the south Pacific coast of Chiapas; 11 Río Bravo; 12 Río Lerma; 13 bodies of water of Valley of Cuatro Ciénegas; 14 Río Mezquital, Río Nazas and springs of Durango state; 15 Río San Fernando, Río Soto La Marina and other bodies of water in Tamaulipas; 16 Río Pánuco; 17 Río Tuxpan; 18 Río La Antigua; 19 bodies of water of Los Chimalapas; 20 Río Papagayo; 21 bodies of water in coastal plain of Tabasco; 22 basins of Río Usumacinta and Río Grijalva, Chiapas; 23 bodies of water of the Yucatán Peninsula. Along with their four-letter code (abbr), geographical coordinates and total number of helminth species collected.

This is one of five general categories that contains the water management elements on the Rio Grande/Bravo basin. This category includes the dams, water districts, and water related models on the United States and Mexico that overlap the basin boundary.

The hypoxic zone in the Gulf of Mexico is the world's second largest. In 2008, the Hypoxia Task Force directed states in the Mississippi River Basin to develop plans to reduce nitrogen and phosphorus loads to the Gulf. The states of Iowa, Illinois, and Minnesota developed Nutrient Reduction Strategies (NRS) based on science assessments. The NRS quantified the effectiveness of management, land use changes, and conservation practices to reduce nutrient losses. The objective of this research was to estimate nutrient reductions for different levels of implementation of management and land use changes and edge-of-field practices. Selected practices across the states were grouped as (1) in-field management, (2) changes in land use, and (3) edge-of-field. Four increasingly challenging levels of implementation were identified: benchmark, low, medium, and high. Benchmark estimates were taken from the time the states' NRS were written (2012–13). The high level of implementation was taken to be maximum achievable adoption with low and medium levels between the benchmark and high. Land areas in row cropping in the states were obtained from the 2012 NASS Cropland Data Layer.

The 1922 Colorado River Compact divided the Basin into Upper and Lower Basins, each of which was apportioned 7.5 million acre feet (MAF) of Colorado River water per year. The 7.5 MAF are divided among the states according to the 1928 Boulder Canyon Project Act (Lower) and the 1948 Upper Colorado River Basin Compact. The Lower Basin apportionments in a year of normal water supply are shown below, while the Upper Basin apportionments are based on percentages of river †ow, which can vary from year to year. Additionally, 1.5 MAF are allotted annually to Mexico, pursuant to a 1944 treaty between the U.S. and Mexico. The compacts, agreements, contracts, laws, etc. governing the Colorado River are known as the “Law of the River.”

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Contained within the Atlas of Canada 8.5x11 series maps is a map which was created as a joint effort by The Atlas of Canada, The National Institute of Statistics, Geography and Informatics, Mexico and the National Atlas of the United States under the sponsorship of the commission for environmental cooperation. The map shows the major North American drainage basins, or wateresheds, which drain into the Atlantic Ocean, Hudson Bay, the Arctic Ocean, the Pacific Ocean, the gulf of Mexico and teh Caribbean Sea. Each watershed is shown in its own colour, with subdivisions shown in tonal variations. Areas of internal drainage, which lack outlets to the sea, are shown in grey.

This data release contains monthly 270-meter gridded Basin Characterization Model (BCMv8) climate inputs and hydrologic outputs for the Salton Sea Watershed, which crosses the international border into Mexico in the southern part of the basin. Downscaled gridded climate inputs (Daly et al., 2008) for the California portion of the BCM (Flint et al, 2021) include: precipitation (ppt), minimum temperature (tmn), maximum temperature (tmx), and potential evapotranspiration (pet). Historical climate data covering the Mexico portion of the watershed was unavailable. Climate data for the California portion of the watershed was regridded using regression techniques described in Flint & Flint (2012) to extend climate inputs into Mexico. Other model inputs include elevation, soil, land use, geology, and soil thickness data. These data were collected and processed for the Mexico portion of the watershed and merged with the BCM model inputs for the California portion of the watershed. Gridded hydrologic variables include: actual evapotranspiration (aet), climatic water deficit (cwd), snowpack (pck), recharge (rch), runoff (run), and soil storage (str). The units for temperature variables are degrees Celsius, and all other variables are in millimeters. Monthly historical variables from water years 1896 to 2023 are summarized into water year files and long-term average summaries for water years 1981-2010 and 1991-2020. Raster grids are in the the North American Datum 1983 (NAD83) California Teale Albers (meters) projection in an open format ascii text file (*.asc). References cited: Daly, C., Halbleib, M., Smith, J.I., Gibson, W.P., Doggett, M.K., Taylor, G.H., Curtis, J. and Pasteris, P.P., 2008. Physiographically sensitive mapping of climatological temperature and precipitation across the conterminous United States. International Journal of Climatology: a Journal of the Royal Meteorological Society, 28(15), pp.2031-2064.https://doi.org/10.1002/joc.1688 Flint, L.E., Flint, A.L., and Stern, M.A., 2021, The Basin Characterization Model - A monthly regional water balance software package (BCMv8) data release and model archive for hydrologic California (ver. 4.0, May 2024): U.S. Geological Survey data release, https://doi.org/10.5066/P9PT36UI.