National Water-Quality Program Monitoring Networks, Arizona, 2013-2023 Active
The Arizona Water Science Center collects water-quality data from stream and aquifer sites in networks that are part of the National Water-Quality Program (NWQP) and the National Stream Quality Accounting Network (NASQAN).
This program provides an understanding of water-quality conditions, whether conditions are getting better or worse over time, and how natural features and human activities affect those conditions. Regional and national assessments are possible because of a consistent study design and uniform methods of data collection and analysis. Monitoring data collected from the sampling network are integrated with geographic information on hydrological characteristics, land use, and other landscape features in models to extend water-quality understanding to unmonitored areas. Local, State, Tribal, and national stakeholders can use such information to design and implement strategies for managing, protecting, and monitoring water resources in many different hydrologic and land-use settings across the Nation. Monitoring program plans for 2013–2023 are summarized below and in USGS Fact Sheet 2013-3008.
Stream Monitoring
Water-quality monitoring for 2013 to 2023 will be done at a network of 100 stream sites across the nation, including three in Arizona (see table and map). Most are long-term USGS monitoring sites that have more than 20 years of data. The national network includes 61 large river sites that will provide basic coverage of large-scale trends in nutrient, sediment, and contaminant loading to inland or coastal receiving waters, and 39 wadeable stream sites that will be used to track trends in water-quality and ecosystem condition at urban, agricultural, and undeveloped watersheds selected to represent the national diversity of environmental settings. Most sites will be sampled 6 to 18 times per year for a wide range of contaminants. At the 39 wadeable stream sites, including one in Arizona, stream-ecology evaluations of the condition of algal, macroinvertebrate, and fish communities will be conducted annually.
Site Identifier | Site Name | River Type | Water Sample Count Per Year | Water Sample Analyses | Annual Stream Ecology Monitoring |
---|---|---|---|---|---|
09380000 | Colorado River at Lees Ferry, AZ | Large inland river | 14 | Selected water properties, major ions, selected trace elements, nutrients, pesticides, and suspended sediment | No |
09522000 | Colorado River the the Northerly International Boundary with Mexico, above Morelos Dam, AZ | Large coastal river | 12 | Selected water properties, major ions, selected trace elements, nutrients, pesticides, and suspended sediment | No |
09505800 | West Clear Creek near Camp Verde, AZ | Undeveloped stream | 6 | Selected water properties, major ions, selected trace elements, nutrients, pesticides, and suspended sediment | Yes |
Access data:
- 09380000 COLORADO RIVER AT LEES FERRY, AZ
- 0952200 COLORADO RIVER AT NIB, ABOVE MORELOS DAM, AZ
- 09505800 WEST CLEAR CREEK NEAR CAMP VERDE, AZ
Aquifer Monitoring
Water-quality monitoring studies are planned in 20 principal aquifers across the nation, which collectively account for more than 75 percent of the national groundwater used for drinking water. Monitoring data will be statistically analyzed to generate maps of selected contaminant occurrence at the depth zones used for domestic and public supply. Monitoring data will also be used to assess how groundwater supplies are changing over time and why.
-
Sampling Existing Networks for Assessing Trends — About 2,500 wells distributed among 79 existing networks that were previously sampled between 1993 and 2013 will be resampled over the next decade for key water properties, nitrate, and trace elements to assess how shallow groundwater quality is changing in principal aquifers beneath urban and agricultural land. Such efforts will include resampling a network of 35 wells in the West Salt River Valley (likely in year 2018; see map above for location), a basin which contains much of Phoenix and its western suburbs. Selected wells will also be sampled for pesticides, contaminants of emerging concern (pharmaceuticals, hormones, and high production volume chemicals), radiochemicals, microbial contaminants, and tracers that indicate the approximate age of the groundwater.
-
Sampling New Networks to Define Conditions at Depth — In addition to resampling networks described above, about 1,500 deep public supply wells will be sampled across the nation during 2013–2023 to help characterize water-quality conditions in deeper parts of principal aquifers that were not examined in previous decades. In 2013, this effort included sampling about 60 wells completed in Basin and Range basin-fill aquifers within Arizona, California, Nevada, New Mexico, and Utah (see map above for extent in Arizona). Samples from these wells were analyzed for selected water properties, nutrients, trace elements, pesticides, contaminants of emerging, radiochemicals, microbial contaminants, and tracers that indicate the approximate age of the groundwater.
Below is a list of NWQP publications related to Arizona.
The quality of our Nation's waters: Water quality in basin-fill aquifers of the southwestern United States: Arizona, California, Colorado, Nevada, New Mexico, and Utah, 1993-2009
Predicted nitrate and arsenic concentrations in basin-fill aquifers of the Southwestern United States
Modeled sources, transport, and accumulation of dissolved solids in water resources of the southwestern United States
Dissolved solids in basin-fill aquifers and streams in the southwestern United States
- Overview
The Arizona Water Science Center collects water-quality data from stream and aquifer sites in networks that are part of the National Water-Quality Program (NWQP) and the National Stream Quality Accounting Network (NASQAN).
This program provides an understanding of water-quality conditions, whether conditions are getting better or worse over time, and how natural features and human activities affect those conditions. Regional and national assessments are possible because of a consistent study design and uniform methods of data collection and analysis. Monitoring data collected from the sampling network are integrated with geographic information on hydrological characteristics, land use, and other landscape features in models to extend water-quality understanding to unmonitored areas. Local, State, Tribal, and national stakeholders can use such information to design and implement strategies for managing, protecting, and monitoring water resources in many different hydrologic and land-use settings across the Nation. Monitoring program plans for 2013–2023 are summarized below and in USGS Fact Sheet 2013-3008.
Stream Monitoring
Water-quality monitoring for 2013 to 2023 will be done at a network of 100 stream sites across the nation, including three in Arizona (see table and map). Most are long-term USGS monitoring sites that have more than 20 years of data. The national network includes 61 large river sites that will provide basic coverage of large-scale trends in nutrient, sediment, and contaminant loading to inland or coastal receiving waters, and 39 wadeable stream sites that will be used to track trends in water-quality and ecosystem condition at urban, agricultural, and undeveloped watersheds selected to represent the national diversity of environmental settings. Most sites will be sampled 6 to 18 times per year for a wide range of contaminants. At the 39 wadeable stream sites, including one in Arizona, stream-ecology evaluations of the condition of algal, macroinvertebrate, and fish communities will be conducted annually.
NWQP Stream Monitoring Sites, Arizona, sampling plans for 2013-2023 Site Identifier Site Name River Type Water Sample Count Per Year Water Sample Analyses Annual Stream Ecology Monitoring 09380000 Colorado River at Lees Ferry, AZ Large inland river 14 Selected water properties, major ions, selected trace elements, nutrients, pesticides, and suspended sediment No 09522000 Colorado River the the Northerly International Boundary with Mexico, above Morelos Dam, AZ Large coastal river 12 Selected water properties, major ions, selected trace elements, nutrients, pesticides, and suspended sediment No 09505800 West Clear Creek near Camp Verde, AZ Undeveloped stream 6 Selected water properties, major ions, selected trace elements, nutrients, pesticides, and suspended sediment Yes Access data:
- 09380000 COLORADO RIVER AT LEES FERRY, AZ
- 0952200 COLORADO RIVER AT NIB, ABOVE MORELOS DAM, AZ
- 09505800 WEST CLEAR CREEK NEAR CAMP VERDE, AZ
Aquifer Monitoring
Water-quality monitoring studies are planned in 20 principal aquifers across the nation, which collectively account for more than 75 percent of the national groundwater used for drinking water. Monitoring data will be statistically analyzed to generate maps of selected contaminant occurrence at the depth zones used for domestic and public supply. Monitoring data will also be used to assess how groundwater supplies are changing over time and why.
-
Sampling Existing Networks for Assessing Trends — About 2,500 wells distributed among 79 existing networks that were previously sampled between 1993 and 2013 will be resampled over the next decade for key water properties, nitrate, and trace elements to assess how shallow groundwater quality is changing in principal aquifers beneath urban and agricultural land. Such efforts will include resampling a network of 35 wells in the West Salt River Valley (likely in year 2018; see map above for location), a basin which contains much of Phoenix and its western suburbs. Selected wells will also be sampled for pesticides, contaminants of emerging concern (pharmaceuticals, hormones, and high production volume chemicals), radiochemicals, microbial contaminants, and tracers that indicate the approximate age of the groundwater.
-
Sampling New Networks to Define Conditions at Depth — In addition to resampling networks described above, about 1,500 deep public supply wells will be sampled across the nation during 2013–2023 to help characterize water-quality conditions in deeper parts of principal aquifers that were not examined in previous decades. In 2013, this effort included sampling about 60 wells completed in Basin and Range basin-fill aquifers within Arizona, California, Nevada, New Mexico, and Utah (see map above for extent in Arizona). Samples from these wells were analyzed for selected water properties, nutrients, trace elements, pesticides, contaminants of emerging, radiochemicals, microbial contaminants, and tracers that indicate the approximate age of the groundwater.
- Publications
Below is a list of NWQP publications related to Arizona.
The quality of our Nation's waters: Water quality in basin-fill aquifers of the southwestern United States: Arizona, California, Colorado, Nevada, New Mexico, and Utah, 1993-2009
The Southwest Principal Aquifers consist of many basin-fill aquifers in California, Nevada, Utah, Arizona, New Mexico, and Colorado. Demands for irrigation and drinking water have substantially increased groundwater withdrawals and irrigation return flow to some of these aquifers. These changes have increased the movement of contaminants from geologic and human sources to depths used to supply driAuthorsSusan A. Thiros, Angela P. Paul, Laura M. Bexfield, David W. AnningPredicted nitrate and arsenic concentrations in basin-fill aquifers of the Southwestern United States
The National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) is conducting a regional analysis of water quality in the principal aquifer systems across the United States. The Southwest Principal Aquifers (SWPA) study is building a better understanding of the susceptibility and vulnerability of basin-fill aquifers in the region to groundwater contamination by synthesizAuthorsDavid W. Anning, Angela P. Paul, Tim S. McKinney, Jena M. Huntington, Laura M. Bexfield, Susan A. ThirosModeled sources, transport, and accumulation of dissolved solids in water resources of the southwestern United States
Information on important source areas for dissolved solids in streams of the southwestern United States, the relative share of deliveries of dissolved solids to streams from natural and human sources, and the potential for salt accumulation in soil or groundwater was developed using a SPAtially Referenced Regressions On Watershed attributes model. Predicted area‐normalized reach‐catchment deliveryAuthorsD.W. AnningByDissolved solids in basin-fill aquifers and streams in the southwestern United States
The U.S. Geological Survey National Water-Quality Assessment Program performed a regional study in the Southwestern United States (Southwest) to describe the status and trends of dissolved solids in basin-fill aquifers and streams and to determine the natural and human factors that affect dissolved solids. Basin-fill aquifers, which include the Rio Grande aquifer system, Basin and Range basin-fillAuthorsDavid W. Anning, Nancy J. Bauch, Steven J. Gerner, Marilyn E. Flynn, Scott N. Hamlin, Stephanie J. Moore, Donald H. Schaefer, Scott K. Anderholm, Lawrence E. Spangler