Category Archives: Water Supply

Waterworks Apprenticeship Program for Roanoke County, Va., High School Students Described in 11/14/17 Roanoke Times Article

Roanoke County teen apprentices get a hands-on look at the valley’s waterworks, Roanoke Times, 11/14/17, describes the Western Virginia Water Authority’s apprenticeship program for Roanoke County high school students.  As of the 2017-18 school year, the Water Authority–which supplies water to customers in the City of Roanoke and the counties of Botetourt, Franklin, and Roanoke–had five paid interns and planned to add five more in 2018-19.  The program targets high school juniors.

More information on the Western Virginia Water Authority is available online at http://www.westernvawater.org/.

Proper Well Abandonment is Well Worth Discussing on the 30th Anniversary in 2017 of the Baby Jessica Incident in Texas

On October 16, 1987, 18-month-old Jessica McClure was rescued from an abandoned water well in Midland, Texas.  The October 2017 issue of The Cross Section, from the High Plains Underground Water Conservation District in Lubbock, Tex., recalls the “Baby Jessica” story as a cautionary tale for the proper closure and sealing of wells that will not longer be used—a task of importance not only for safety of humans and animals but also for groundwater protection.  The newsletter is available online at http://www.hpwd.org/the-cross-section/; or contact the District at 2930 Avenue Q, Lubbock, TX 79411-2499l (806) 762-0181.

Following are some Virginia information resources related to well abandonment and sealing in Virginia.

*Virginia law on sealing temporarily or permanently abandoned wells is online at https://law.lis.virginia.gov/admincode/title12/agency5/chapter630/section450/.

*Water well tips from the Virginia Department of Conservation and Recreation are available online at http://www.dcr.virginia.gov/natural-heritage/lokwaterwell, or contact your local Soil and Water Conservation District  (the District Directory is available onlinee at http://vaswcd.org/district-directory).

*“Proper Permanent Well Abandonment for Virginia Coastal Plain Wells,” from the Virginia Department of Environmental Quality and Department of Health, is available online at http://www.deq.virginia.gov/Portals/0/DEQ/Water/GroundwaterPermitting/DocumentsandForms/2017/DEQFactsheet-WellAbandonment2014.pdf?ver=2017-03-23-123639-840.

*Some Virginia localities also provide information on proper well abandonment.

Dry Conditions and Water-supply Responses in Virginia in Fall 2017 Examined in Nov. 6, 2017, Report from WMRA Radio

“What Does DEQ’s Drought Watch Mean?,” broadcast and posted on November 6, 2017, by WMRA FM-Harrisonburg, gives an overview of water-supply conditions in several central and western Virginia localities that were under voluntary or mandatory water-use reductions in fall 2017.

The 5 min./4 sec. audio and transcript are available online at http://wmra.org/post/what-does-deqs-drought-watch-mean#stream/0.

 

Virginia Water Status Report as of the End of October 2017, Plus a Look at Drought Nationally

Here is the Virginia Water Central News Grouper’s monthly water-status report on precipitation, stream flow, and drought, as of the end of October 2017.  The Virginia Water Resources Research Center thanks the agencies mentioned below for providing the data and maps used in this post.  Icons for precipitation, stream flow, and drought are by George Wills of Blacksburg, Va. (https://www.etsy.com/people/BlacksburgArt).  For previous monthly water status reports, please see this link: https://vawatercentralnewsgrouper.wordpress.com/?s=Water+Status.

01 Icon PrecipHere are National Weather Service (NWS) preliminary (still needing verification) precipitation totals for October 2017 at 11 Virginia or near-Virginia locations, along with the “normal” (three-decade average) for this month of the year at each location.  Also shown are the precipitation totals at each location for the previous 12 months and the annual precipitation normals for each location.  The values are in inches.

Location October 2017 Observed Monthly Normal November 2016-October 2017 Observed Annual Normal
Blacksburg 7.72 2.78 43.54 40.89
Bluefield1 5.06 2.50 43.48 39.63
Bristol2 4.45 2.10 48.67 41.01
Charlottesville3 3.89 3.11 36.39 42.71
Danville 2.92 3.53 42.47 44.41
Lynchburg 2.57 3.11 35.48 41.57
Norfolk 5.06 3.42 49.11 46.53
Richmond 4.95 2.98 39.36 43.60
Roanoke 4.18 2.89 39.79 41.25
Wallops Island4 8.04 3.17 50.52 40.84
Washington-Dulles Airport5 3.15 3.25 42.03 41.54

Location notes
1 – The Bluefield location is the Mercer County, W. Va., airport, near the Va.-W.Va. state line.
2- The Bristol location Tri-Cities Airport in Tenn., about 20 miles from Bristol, Va./Tenn.
3 – The Charlottesville location is the Charlottesville-Albemarle Airport.
4 – Wallops Island is in Accomack County.
5 – Washington-Dulles Airport is in Loudoun County.

Precipitation sources:  Climate pages of the following National Weather Service Forecast Offices:
Blacksburg, Va. (http://www.nws.noaa.gov/climate/index.php?wfo=rnk);
Morristown, Tenn. (http://www.weather.gov/climate/index.php?wfo=mrx;
Baltimore-Washington (http://www.nws.noaa.gov/climate/index.php?wfo=lwx); and
Wakefield, Va. (http://www.nws.noaa.gov/climate/index.php?wfo=akq).

The normal values used by the National Weather Service (NWS) in these provisional reports are based on the period from 1981 to 2010.  The National Climatic Data Center released these normal values in July 2011.  For information on the normal values, see the National Climatic Data Center Web page at http://www.ncdc.noaa.gov/data-access/land-based-station-data/land-based-datasets/climate-normals.

For graphs of precipitation, visit the High Plains Regional Climate Center at https://hprcc.unl.edu/maps.php?map=ACISClimateMaps), where you can find maps of total precipitation and percent of normal precipitation for the past 7, 30, 60, or 90 days for all U.S. regions; or the NWS’ Advanced Hydrologic Prediction Service at http://water.weather.gov/precip/ for a map of precipitation nationwide or by state, with capability to show county boundaries, and archives available for specific days, months, or years.  Shown below are the preliminary maps of the percent-of-normal precipitation for the southeastern United States for the previous 30 days, 60 days, and 90 days, through October 31, 2017.

Precip Perc 30Precip Perc 60Precip perc 90 02 Icon Streamflow
According to the U.S. Geological Survey WaterWatch for Virginia (online at http://waterwatch.usgs.gov/index.php?m=mv01d&r=va&w=map), monthly average stream flow values for October 2017 at 159 stream gages in Virginia and just beyond the state border were as follows, compared to the historical range for each given gage:
within the normal historial range – about 54% of gages;
below normal – about 20%;
much below normal – about 8%;
above normal – about 18%.

Shown below is the color-coded, flow-percentile map for this period, accessed online at https://waterwatch.usgs.gov/index.php?m=mv01d&r=va&w=map on 11/2/17.  The color codes/percentile classes used by USGS to compared flows to historical records for the month are shown in the chart below the map.

Streams Octstream codes 

An overall look at Virginia streamflow conditions is provided in the USGS WaterWatch summary plot of daily average streamflow conditions, compared to historical records for any given date.  Below is the summary plot for 88 Virginia sites during the 45-day period ending October 31, 2017, accessed on 11/2/17 at https://waterwatch.usgs.gov/index.php?id=pa01d&sid=w__plot&r=va.

Streams Plot

03 Icon Groundwater
Information on current groundwater levels in Virginia monitoring wells is available from the U.S. Geological Survey’s National Water Information System, online at http://waterdata.usgs.gov/va/nwis/current/?type=gw; and from the USGS Climate Response Network, online at http://groundwaterwatch.usgs.gov/net/ogwnetwork.asp?ncd=crn (at that page, you can find a national map showing the status of groundwater monitoring wells compared to historical values).

 04 Icon Drought DROUGHT IN VIRGINIA

The weekly U.S. Drought Monitor map from the University of Nebraska-Lincoln (http://droughtmonitor.unl.edu/) for October 31, 2017, categorized 41.5% of Virginia as “abnormally dry” (covering the state approximately from the Piedmont east, except for the eastern peninsulas and the Eastern Shore).  The October 31 report categorized 3.8% of Virginia in “moderate drought” (covering parts of six counties along southern border, just east of Danville).

Drought Monitor categories are as follows:
D0 = abnormally dry;
D1 = moderate drought;
D2 = severe drought;
D3 = extreme drought;
D4 = exceptional drought.

The Drought Monitor notes that it “focuses on broad-scale conditions [and] local conditions may vary.”

For comparison, here are Virginia ratings from previous Drought Monitors from about one month, two months, three months, and one year ago:
9/26/17 – 18/1% abnormally dry;
8/29/17 – 19.7% abnormally dry;
7/25/17 – 32.4% abnormally dry;
11/1/16 – 28.9% abnormally dry or worse; 3.4% moderate drought.

The Virginia Drought Monitoring Task Force (DMTF), a collaboration of state and federal agencies, issued its most recent (as of 10/31/17) Drought Status Report on October 11, 2017.  A link to the report, along with other current drought-status information, is available online at http://www.deq.virginia.gov/Programs/Water/WaterSupplyWaterQuantity/Drought.aspx.  The Task Force’s reports typically include information from some or all of the following agencies: University of Virginia Climatology Office, U.S. Geological Survey (USGS), and the Virginia departments of Agriculture and Consumer Services, Health, and Environmental Quality.  The Task Force is next scheduled to meet on November 2, 2017.  Following is an excerpt from the October 11 report:
“Much below normal rainfall and variable temperatures occurred across Virginia throughout September.  Stream flow gaging stations reported flows that were generally below the normal range (between the 25th and 75th percentiles) with many stations across central, southern, and western Virginia reporting much below-normal flows (less than the 10th percentile).  The recorded 28-day average streamflow at stations in the Shenandoah River basin were lower than the 5th percentile, indicating severe hydrologic drought.  Most of the wells in the Virginia Climate Response network of groundwater level observation wells were reporting normal levels, except for the wells in central Virginia, which continued to report below normal levels.

“The DMTF discussed the continuing dry conditions, especially within the Middle James, Roanoke River and Shenandoah drought evaluation regions, and agreed to recommend the issuance of Drought Watch advisories for these regions.  The DMTF also agreed to continue the existing Drought Watch in the Northern Piedmont region.  The group also decided that the time period for evaluation of the precipitation indicators on the Statewide drought indicator map should be changed from the entire previous water year (October 1, 2016–September 30, 2017) to a more recent period (e.g., the previous 60 or 90 days).  DEQ staff implemented this change. …

“The Virginia Department of Agriculture and Consumer Services (VDACS) reported that some growers Virginia have reported dry conditions that have negatively impacted setting of cover crops.  Also, livestock producers have reported that the extended August and September dry conditions affected pastures to the extent that livestock hay use is 2-3 months ahead of normal.  The U.S. Army Corps of Engineers (USACE) Wilmington NC District reported that minimal rainfall has occurred upstream of the J. H. Kerr and Philpott reservoirs in the Roanoke basin.  The water levels at J. H. Kerr and Philpott dams are running 3.5 feet and 3 feet below guide curve respectively, for this time of year.  USACE Norfolk Region staff reported that water levels at Lake Moomaw (Gathright Dam) on the upper James River were just above 1568 ft (approximately 3 feet above Watch level), and dropping about 0.15 feet per day.”

The Drought Monitoring Task Force also produces a map rating drought-status indicators.  Shown below is the map for November 1, 2017.  The status-indicator abbreviations on that map are as follows: GW = groundwater levels, Prcp = precipitation deficits, Res – reservoir storage, and Flow = stream flow conditions.  For each region of Virginia, the indicators are color coded for “normal,” “watch,” “warning,” or “emergency conditions.”  Note the Watch conditions for four regions in central Virginia, the groundwater emergency conditions in one region, and the streamflow warning conditions in one region.  Any given day’s current map and more information on drought status in Virginia are available online at http://www.deq.virginia.gov/Programs/Water/WaterSupplyWaterQuantity/Drought/CurrentDroughtConditionsMap.aspx.

Drought VA Nov1

DROUGHT ELSEWHERE

The October 31, 2017, U.S. Drought Monitor categorized 28.1% of the United States (including all or parts of 44 states) as being abnormally dry or worse.  The Drought Monitor categorized 2.3% of the country (including parts of 7 states), as being in severe drought or worse (categories D2, D3, and D4).  (The highest percentage in the severe-or-worse categories reported by the Drought Monitor since it began in 2000 was 38.5% of the country for the week of August 7, 2012.)

The nationwide percentages for abnormally dry or worse (categories D0-D4) and severe or worse (categories D2-D4) in the previous three months and one year ago were as follows:
9/26/17 – 31.0% abnormally dry or worse, 4.2% severe drought or worse;
8/29/17 – 25.8% abnormally dry or worse, 4.8% severe drought or worse;
7/25/17 – 33.8% abnormally dry or worse, 4.4% severe drought or worse;
11/1/16 – 45.0% abnormally dry or worse; 12.1% severe drought or worse.

90-DAY DROUGHT OUTLOOK

For a look ahead, the National Weather Service/Climate Prediction Center’s “U.S. Seasonal Drought Outlook” is available at http://www.cpc.ncep.noaa.gov/products/expert_assessment/sdo_summary.php.  Shown below is the outlook map available on November 1, 2017.

Drought Outlook map October

 

Groundwater Permit Reduction Impacts in Eastern Virginia Discussed at State Water Commission Meeting on 10/24/17

At the State Water Commission meeting on October 24, 2017, Virginia Department of Environmental Quality (DEQ) Director David Paylor reported that recent reductions in permitted withdrawals of groundwater in eastern Virginia should reduce the rate of water-table dropping in the region’s Potomac aquifer, estimated at about 2 to 2.5 feet per year currently.  Mr. Paylor reported that the permitted withdrawals for the region’s 14 largest groundwater users have been reduced from 146 million gallons a day (MGD) to about 69 million MGD.  Mr. Paylor also noted that the Hampton Roads Sanitation Authority’s plan to add treated wastewater to the aquifer—known as the Sustainable Water Initiative for Tomorrow, or SWIFT; online at http://swiftva.com/—could significantly replenish the groundwater source.

More information about the State Water Commission meeting is available online at http://dls.virginia.gov/commissions/swc.htm?x=mtg.

Source: DEQ: Cutting groundwater draws likely to stabilize supply, Daily Press, 10/24/17.

Virginia Water Status Report as of the End of September 2017, Plus a Look at Drought Nationally

Here is the Virginia Water Central News Grouper’s monthly water-status report on precipitation, stream flow, and drought, as of the end of September 2017.  The Virginia Water Resources Research Center thanks the agencies mentioned below for providing the data and maps used in this post.  Icons for precipitation, stream flow, and drought are by George Wills of Blacksburg, Va. (https://www.etsy.com/people/BlacksburgArt).  For previous monthly water status reports, please see this link: https://vawatercentralnewsgrouper.wordpress.com/?s=Water+Status.

01 Icon Precip

Here are National Weather Service (NWS) preliminary (still needing verification) precipitation totals for September 2017 at 11 Virginia or near-Virginia locations, along with the “normal” (three-decade average) for this month of the year at each location.  Also shown are the precipitation totals at each location for the previous 12 months and the annual precipitation normals for each location.  The values are in inches.

Location September 2017 Observed

 

Monthly Normal October 2016-

September 2017 Observed

Annual Normal
Blacksburg 1.45 3.10 37.97 40.89

 

Bluefield1

 

0.84 3.14 39.96 39.63
Bristol2

 

0.99 2.99 44.96 41.01
Charlottesville3

 

1.95 4.48 33.25 42.71
Danville

 

2.60 3.96 44.36 44.41
Lynchburg

 

1.91 3.88 34.64 41.57
Norfolk

 

1.99 4.76 53.48 46.53
Richmond

 

1.48 4.13 38.65 43.60
Roanoke

 

2.38 3.89 40.03 41.25
Wallops Island4

 

1.84 3.98 49.83 40.84
Washington-Dulles Airport5 1.75 3.92 39.53 41.54

**Record low for the month at respective location.

Location notes
1 – The Bluefield location is the Mercer County, W. Va., airport, near the Va.-W.Va. state line.
2- The Bristol location Tri-Cities Airport in Tenn., about 20 miles from Bristol, Va./Tenn.
3 – The Charlottesville location is the (Charlottesville-Albemarle Airport.
4 – Wallops Island is in Accomack County.
5 – Washington-Dulles Airport is in Loudoun County.

Precipitation sources:  Climate pages of the following National Weather Service Forecast Offices:
Blacksburg, Va. (http://www.nws.noaa.gov/climate/index.php?wfo=rnk);
Morristown, Tenn. (http://www.weather.gov/climate/index.php?wfo=mrx;
Baltimore-Washington (http://www.nws.noaa.gov/climate/index.php?wfo=lwx); and
Wakefield, Va. (http://www.nws.noaa.gov/climate/index.php?wfo=akq).

The normal values used by the National Weather Service (NWS) in these provisional reports are based on the period from 1981 to 2010.  The National Climatic Data Center released these normal values in July 2011.  For information on the normal values, see the National Climatic Data Center Web page at http://www.ncdc.noaa.gov/data-access/land-based-station-data/land-based-datasets/climate-normals.

For graphs of precipitation, visit the Southeast Regional Climate Center (Chapel Hill, N.C) at http://www.sercc.com/climateinfo/precip_maps, where you can find maps of total precipitation and percent of normal precipitation for the past 7, 30, 60, or 90 days; or the NWS’ Advanced Hydrologic Prediction Service at http://water.weather.gov/precip/ for a map of precipitation nationwide or by state, with capability to show county boundaries, and archives available for specific days, months, or years.  Shown below are the Southeast Regional Climate Center’s preliminary maps of the percent-of-normal precipitation for the previous 30 days, 60 days, and 90 days, through October 3, 2017.

Precip 30Precip 60Precip 90 

02 Icon Streamflow
According to the U.S. Geological Survey WaterWatch for Virginia (online at http://waterwatch.usgs.gov/index.php?m=mv01d&r=va&w=map), monthly average stream flow values for September 2017 at 156 stream gages in Virginia and just beyond the state border were as follows, compared to the historical range for each given gage:
within the normal historical range – about 68% of gages;
below normal – about 24%;
much below normal – about 5%;
above normal – about 3%.

Shown below is the color-coded, flow-percentile map for this period, accessed online at https://waterwatch.usgs.gov/index.php?m=mv01d&r=va&w=map on 10/4/17.  The color codes/percentile classes used by USGS to compared flows to historical records for the month are shown in the chart below the map.

Streams Sept 

An overall look at Virginia streamflow conditions is provided in the USGS WaterWatch summary plot of daily average streamflow conditions, compared to historical records for any given date.  Below is the summary plot for 88 Virginia sites during the 45-day period ending October 1, 2017, accessed on 10/4/17 at https://waterwatch.usgs.gov/index.php?id=pa01d&sid=w__plot&r=va.

streams plot
03 Icon Groundwater
Information on current groundwater levels in Virginia monitoring wells is available from the U.S. Geological Survey’s National Water Information System, online at http://waterdata.usgs.gov/va/nwis/current/?type=gw; and from the USGS Climate Response Network, online at http://groundwaterwatch.usgs.gov/net/ogwnetwork.asp?ncd=crn (at that page, you can find a national map showing the status of groundwater monitoring wells compared to historical values).

04 Icon Drought

DROUGHT IN VIRGINIA

The weekly U.S. Drought Monitor map from the University of Nebraska-Lincoln (http://droughtmonitor.unl.edu/) for September 26, 2017, categorized 18.1% of Virginia as “abnormally dry” (including areas in the following watersheds: upper James; upper Roanoke; lower New; Big Sandy; and upper Clinch/Holston).

Drought Monitor categories are as follows:
D0 = abnormally dry;
D1 = moderate drought;
D2 = severe drought;
D3 = extreme drought;
D4 = exceptional drought.

The Drought Monitor notes that it “focuses on broad-scale conditions [and] local conditions may vary.”

For comparison, here are Virginia ratings from previous Drought Monitors from about one month, two months, three months, and one year ago:
8/29/17 – 19.7% abnormally dry;
7/25/17 – 32.4% abnormally dry;
6/27/17 – 0.9% abnormally dry;
9/27/16 – 84.2% abnormally dry; 0.8% moderate drought.

The Virginia Drought Monitoring Task Force (DMTF), a collaboration of state and federal agencies, issued its most recent (as of 10/4/17) Drought Status Report on September 18, 2017.  A link to the report, along with other current drought-status information, is available online at http://www.deq.virginia.gov/Programs/Water/WaterSupplyWaterQuantity/Drought.aspx.  The Task Force’s reports typically include information from some or all of the following agencies: University of Virginia Climatology Office, U.S. Geological Survey (USGS), and the Virginia departments of Agriculture and Consumer Services, Health, and Environmental Quality.  The Task Force is next scheduled to meet on October 12, 2017.  Following is an excerpt from the September 18 report:

“Normal to below-normal temperatures prevailed across much of Virginia during the latter part of August and early September.  Precipitation amounts during this same period were highly variable.  Stream flow gaging stations reported flows that were generally within the normal range (between the 25th and 75th percentiles); with some stations in scattered locations across central, southern and western Virginia reporting below-normal flows.
“Most of the wells in the Virginia Climate Response network of groundwater level observation wells were reporting normal to above-normal levels, except for the wells in central Virginia, which continued to report below-normal levels.  The DMTF agreed to recommend continuing the existing Drought Watch in the Northern Piedmont region, based upon a forecast for above-normal temperatures, below-normal precipitation and the continuing low groundwater levels with consequent potential for low base flows. …
“For the current water year (October 1, 2016–September 15, 2017) precipitation totals remained below the drought watch indicator level for precipitation (85% of normal) for one of Virginia’s thirteen drought-evaluation regions: The Northern Piedmont region received 83% of normal precipitation for the current water year.  Water year-to-date precipitation totals across all other regions were close to or above 100% or normal….
“The Virginia Department of Agriculture and Consumer Services (VDACS) reported that some growers in southwest Virginia have reported dry conditions. Also, cotton growers in southern Greensville County reported receiving below average precipitation, which has negatively affected their crop, and corn producers in northeastern Virginia reported that the harvest is underway and yields there are below normal due to the July heat and lack of moisture.
“The U.S. Army Corps of Engineers (USACE) Wilmington NC District reported that their projects had prepared for potential flooding due to Hurricane Irma, but the storm had little impact in southern Virginia and northern North Carolina. The reservoir levels at J. H. Kerr and Philpott dams are running about 2-3 feet below guide curve for this time of year.”

The Drought Monitoring Task Force also produces a map rating drought-status indicators.  Shown below is the map for October 2, 2017.  The status-indicator abbreviations on that map are as follows: GW = groundwater levels, Prcp = precipitation deficits, Res – reservoir storage, and Flow = stream flow conditions.  For each region of Virginia, the indicators are color coded for “normal,” “watch,” “warning,” or “emergency conditions.”  Any given day’s current map and more information on drought status in Virginia are available the Task Force Web site listed above.

Drought VADROUGHT ELSEWHERE

The September 26, 2017, U.S. Drought Monitor categorized 31.0% of the United States (including all or parts of 42 states) as being abnormally dry or worse.  The Drought Monitor categorized 4.2% of the country (including parts of 10 states), as being in severe drought or worse (categories D2, D3, and D4).  (The highest percentage in the severe-or-worse categories reported by the Drought Monitor since it began in 2000 was 38.5% of the country for the week of August 7, 2012.)

The nationwide percentages for abnormally dry or worse (categories D0-D4) and severe or worse (categories D2-D4) in the previous three months and one year ago were as follows:
8/29/17 – 25.8% abnormally dry or worse, 4.8% severe drought or worse;
7/25/17 – 33.8% abnormally dry or worse, 4.4% severe drought or worse;
6/27/17 – 23.2% abnormally dry or worse, 2.7% severe drought or worse;
9/27/16 – 38.8% abnormally dry or worse; 6.8% severe drought or worse.

The following state had 50% or more categorized by the Sepember 26 Drought Monitor in severe-or-worse drought:
Montana – 70%;

90-DAY DROUGHT OUTLOOK

For a look ahead, the National Weather Service/Climate Prediction Center’s “U.S. Seasonal Drought Outlook” is available at http://www.cpc.ncep.noaa.gov/products/expert_assessment/sdo_summary.php.  Shown below is the outlook map available on October 4, 2017.
Drought outlook

 

Managed Aquifer Recharge, Storage, and Recovery in 2017 Arroyo from the Arizona Water Resources Research Center, September 2017 Water Resources Impact from AWRA, July/August 2017 Colorado Water, and Other Information Resources

Managed aquifer recharge, storage, and recovery—that is, the intentional recharge of groundwater aquifers with surface water or wastewater, for storage and potential future recovery—was examined in detail in three water newsletters in 2017.

“Arizona Water Banking, Recharge, and Recovery,” by Noah Silber-Coats and Susanna Eden, is the feature article in the 2017 issue of The Arroyo, an annual newsletter from the University of Arizona Water Resources Research Center.  The 16-page article examines in detail Arizona’s program of recharging groundwater aquifers with surface water (particularly Colorado River water from the Central Arizona Project) and the complicated legal and management arrangements involved.  The publication is available online at https://wrrc.arizona.edu/publications/arroyo, or contact the Arizona center at (520) 621-9591, or e-mail: wrrc@cals.arizona.edu.

The concept, history, and current examples of managed aquifer recharge in United States and beyond are the focus of the September 2017 issue of Water Resources Impact, published by the American Water Resources Association (AWRA; headquatered in Middleburg, Va.).  The publication devotes 30 pages in 10 feature articles by invited authors to the subject.  The publication is available online at The publication is available online at http://www.awra.org/impact/; or contact AWRA at P.O. Box 1626, Middleburg, VA 20118-8390; (540) 687-8390; info@awra.org.

“Aquifer Storage and Recovery” is the theme of the July/August 2017 issue of Colorado Water, from the Colorado State University Water Center and the Colorado Water Institute.  The 42-page newsletter builds upon a symposium on subsurface water storage held at Colorado State University in November 2016.  The issue is available in the newsletter archive online at http://www.cwi.colostate.edu/newsletters.asp; or contact the Colorado Water Institute at 1033 Campus Delivery, Fort Collins CO 80523-1033; (970) 491-6308; cwi@colostate.edu.

Following are some other information resources on this topic.

Standard Guidelines for Artificial Recharge of Ground Water – from the American Society of Civil Engineers/Environmental and Water Resources Institute.  Before presenting detailed standards for planning and implementing managed aquifer recharge projects, the document provides introductory material on groundwater recharge concepts and terms.  The document is available online (as a PDF) at http://ascelibrary.org/doi/pdf/10.1061/9780784405482.

Prospects for Managed  Underground Storage of Recoverable Water – published in 2008 by the National Research Council.  The 350-page report is available online at https://www.nap.edu/catalog/12057/prospects-for-managed-underground-storage-of-recoverable-water.

The Ninth International Symposium on Managed Aquifer Recharge – held in June 2016 in Mexico City.  The symposium Web site is http://www.ismar9.org/.

MAR Portal developed by the International Groundwater Resources Assessment Centre, located in The Netherlands, online at https://www.un-igrac.org/ggis/mar-portal.  The portal offers information on managed aquifer recharge (MAR) sites around the world and regional MAR suitability maps.