Category Archives: Water Supply

Virginia Precipitation and Stream Flow for the 7-day Period Ending July 28, 2015

Below are images showing precipitation in Virginia and other areas of the southeastern United States, and stream flow in Virginia, over the seven-day period ending July 28, 2015.  The Virginia Water Resources Research Center thanks the agencies mentioned below for providing precipitation and stream-flow information and images.  For monthly reviews of precipitation, stream flow, and drought, please see the News Grouper posts available at this link: https://vawatercentralnewsgrouper.wordpress.com/?s=Monthly+Water+Status.  For more information on current and historical surface-water and groundwater conditions in Virginia, please see the U.S. Geological Survey (USGS) Virginia Science Center’s Web site, http://va.water.usgs.gov/.

Precipitation

The following maps show southeastern U.S. precipitation amounts (top map) and the percent of normal precipitation for the given location at this time of year (bottom map) over the seven-day period ending July 28, 2015.  The maps were accessed 7/29/15 from the National Oceanic and Atmospheric Administration’s (NOAA) Southeast Regional Climate Center, located at the University of North Carolina in Chapel Hill; online at http://www.sercc.com/climateinfo/precip_maps. As of that date, these data were provisional (needing to be verified for accuracy and subject to possible revision).
PrecipJul28PrecippercJul28

Another source of precipitation data is the National Weather Service’s Advanced Hydrologic Prediction Service, http://water.weather.gov/precip/, provides maps showing precipitation nationwide or by state for specific days, months, or years. The site also has the capability to show county boundaries. Shown below are maps of precipitation and percent of normal precipitation for the 7-day precipitation ending at 8 a.m. Eastern Daylight Time on July 29, 2015. (Please note that UTC, the time shown on the map below, is five hours ahead of Eastern Standard Time and four hours ahead of Eastern Daylight Time.)
PrecipUSJul29PrecippercUSJul29

Stream Flow

Average Virginia stream flow over the seven-day period ending July 28, 2015, is indicated in the map below, from the U.S. Geological Survey WaterWatch for Virginia (online at http://waterwatch.usgs.gov/classic.php?m=pa07d&r=va&w=mv01d%2Cmap, accessed 7/29/15).  For about 140 stream-gaging stations in Virginia and just beyond the state border, the map’s color-coded dots compare the previous week’s average stream flows to the normal flow levels for that week over the historical record for each gaging station.  The “bluer” the color of the dots, the higher the percentile and flow relative to normal for the site and time of year; the “wetter” the dots, the lower the percentile and flow relative to normal.  The color codes/percentile classes used by USGS are as shown in the chart following the map.

Streams Jul28

KEEP on deskto - Stream flow code graph

Virginia Precipitation and Stream Flow for the 7-day Period Ending July 21, 2015

Below are images showing precipitation in Virginia and other areas of the southeastern United States, and stream flow in Virginia, over the seven-day period ending July 21, 2015.  The Virginia Water Resources Research Center thanks the agencies mentioned below for providing precipitation and stream-flow information and images.  For monthly reviews of precipitation, stream flow, and drought, please see the News Grouper posts available at this link: https://vawatercentralnewsgrouper.wordpress.com/?s=Monthly+Water+Status.  For more information on current and historical surface-water and groundwater conditions in Virginia, please see the U.S. Geological Survey (USGS) Virginia Science Center’s Web site, http://va.water.usgs.gov/.

Precipitation

The following maps show southeastern U.S. precipitation amounts (top map) and the percent of normal precipitation for the given location at this time of year (bottom map) over the seven-day period ending July 21, 2015.  The maps were accessed 7/22/15 from the National Oceanic and Atmospheric Administration’s (NOAA) Southeast Regional Climate Center, located at the University of North Carolina in Chapel Hill; online at http://www.sercc.com/climateinfo/precip_maps.  As of that date, these data were provisional (needing to be verified for accuracy and subject to possible revision).
PrecipJul21

Precip perc Jul21

Another source of precipitation data is the National Weather Service’s Advanced Hydrologic Prediction Service, http://water.weather.gov/precip/, which provides maps showing precipitation nationwide or by state for specific days, months, or years.  The site also has the capability to show county boundaries. Shown below are maps of precipitation and percent of normal precipitation for the 7-day precipitation ending at 8 a.m. Eastern Daylight Time on July 22, 2015.  (Please note that UTC, the time shown on the map below, is five hours ahead of Eastern Standard Time and four hours ahead of Eastern Daylight Time.)
Precip US Jul22

PrecippercUS Jul22

Stream Flow

Average Virginia stream flow over the seven-day period ending July 21, 2015, is indicated in the map below, from the U.S. Geological Survey WaterWatch for Virginia (online at http://waterwatch.usgs.gov/classic.php?m=pa07d&r=va&w=mv01d%2Cmap, accessed 7/22/15).  For 140 stream-gaging stations in Virginia and just beyond the state border, the map’s color-coded dots compare the previous week’s average stream flows to the normal flow levels for that week over the historical record for each gaging station.  The “bluer” the color of the dots, the higher the percentile and flow relative to normal for the site and time of year; the “wetter” the dots, the lower the percentile and flow relative to normal.  The color codes/percentile classes used by USGS are as shown in the chart following the map.

Streams Jul21

KEEP on deskto - Stream flow code graph

Virginia Precipitation and Stream Flow for the First Half of July 2014, Plus a Mid-Month Drought Assessment

Below are images showing precipitation in Virginia and the rest of the continental United States, and stream flow in Virginia, over the 14-day period ending July 14, 2015.  Also below is a map showing the status of several drought indicators in different Virginia regions, as of July 15.  The Virginia Water Resources Research Center thanks the agencies mentioned below for providing precipitation and stream-flow information and images.  For monthly reviews of precipitation, stream flow, and drought, please see the News Grouper posts available at this link: https://vawatercentralnewsgrouper.wordpress.com/?s=Monthly+Water+Status.  For more information on current and historical surface-water and groundwater conditions in Virginia, please see the U.S. Geological Survey (USGS) Virginia Science Center’s Web site, http://va.water.usgs.gov/.

Precipitation

The National Weather Service’s Advanced Hydrologic Prediction Service, http://water.weather.gov/precip/, provides maps showing precipitation nationwide or by state for specific days, months, or years. The site also has the capability to show county boundaries. Shown below are maps of precipitation and percent of normal precipitation for the 14-day precipitation ending at 8 a.m. Eastern Daylight Time on July 15, 2015. (Please note that UTC, the time shown on the map below, is five hours ahead of Eastern Standard Time and four hours ahead of Eastern Daylight Time.)

Precip US July 15Precip perc US July 15

Stream Flow

Average Virginia stream flow over the 14-day period ending July 14, 2015, is indicated in the map below, from the U.S. Geological Survey WaterWatch for Virginia (online at http://waterwatch.usgs.gov/classic.php?m=pa14d&r=va&w=pa07d%2Cmap, accessed 7/15/15).  The map’s color-coded dots compare the previous week’s average stream flows to the normal flow levels for that week over the historical record for each gaging station.  The “bluer” the color of the dots, the higher the percentile and flow relative to normal for the site and time of year; the “wetter” the dots, the lower the percentile and flow relative to normal.  The color codes/percentile classes used by USGS are as shown in the chart following the map.

Streams July 15

KEEP on deskto - Stream flow code graph

Drought Status Update

The Virginia Drought Monitoring Task Force, a collaboration of state and federal agencies, produces a daily map rating drought-status indicators. Shown below is the July 15, 2015, map.  The status-indicator abbreviations on that map are as follows: GW = groundwater levels, Prcp = precipitation deficits, Res = reservoir storage, and Flow = stream flow conditions.  or 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, http://www.deq.virginia.gov/Programs/Water/WaterSupplyWaterQuantity/Drought.aspx.

Drougth VA July 15

Virginia Water Status Report as of the End of June 2015, 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 June 2015.  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).

Precipitation Icon by George Wills

Here are National Weather Service (NWS) preliminary (still needing verification) precipitation totals for June 2015 at 11 Virginia or near-Virginia locations, along with the normal for this month of the year at each location; note the record monthly lows at Bristol and Danville.   Also shown are the precipitation totals at each location for the previous 12 months and the normal annual precipitation for each location.   All values are in inches.

Location June 2015

Precipitation

 

Normal for Month July 2014-June 2015 Precipitation

 

Normal Annual Precipitation
Blacksburg 3.48 4.00 40.41 40.89
Bluefield (Merc. Co. airport, near Va.-W.Va. state line) 3.23 4.14 41.01 39.63
Bristol (Tri-Cities Airport in Tenn., about 20 miles from Bristol, Va.-Tenn.) 2.45 3.90 39.91 41.01
Charlottesville (Char.-Albemarle Airport) 8.23 3.73 38.44 42.71
Danville 8.12 3.85 41.36 44.41
Lynchburg 5.59 3.63 40.25 41.57
Norfolk 8.34 4.26 52.10 46.53
Richmond 6.05 3.93 40.34 43.60
Roanoke 9.07 3.83 44.83 41.25
Wallops Island (Accomack County) 4.31 3.29 42.27 40.84
Washington-Dulles Airport (Loudoun County) 7.44 3.98 38.40 41.54

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 provisional (still needing verification) maps of the percent-of-normal precipitation for the previous 30 days, 60 days, and 90 days, through June 30, 2015.

Precip perc 30 dayPrecip perc 60 dayPrecip perc 90 day 

Stream flow icon by George Wills

According to the U.S. Geological Survey WaterWatch for Virginia (online at http://waterwatch.usgs.gov/classic.php?m=mv01d&r=va&w=real%2Cmap), monthly average stream flow values for June 2015 at 152 stream gages in Virginia and just beyond the state border were in the normal range at about 71 percent of gages, below normal at about 11 percent, and above normal at about 18 percent.  The color-coded, flow-percentile map for this period is shown below.  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.

StreamsKEEP on deskto - Stream flow code graph 

 Drought Watch icon by George Wills

DROUGHT IN VIRGINIA

The weekly National Drought Monitor map from the University of Nebraska-Lincoln (http://droughtmonitor.unl.edu/) for June 30, 2015, showed about 13 percent of Virginia as abnormally dry, covering parts of far southwestern Virginia and some areas of the New River and Roanoke River basins between Montgomery County and Danville.  The Drought Monitors for June 16 and June 30 had categorized about 4 percent of Virginia in moderate drought (covering parts of several counties in far southwestern Virginia).

The Drought Monitor notes that it “focuses on broad-scale conditions [and] local conditions may vary.” The Drought Monitor categories are as follows:
D0 = abnormally dry;
D1 = moderate drought;
D2 = severe drought;
D3 = extreme drought;
D4 = exceptional drought.

For comparison, here are Virginia ratings from previous Drought Monitors from about one month, two months, three months, and one year ago:
5/26/15 – 32 percent abnormally dry;
4/28/15 – drought-free;
3/31/15 – 14 percent abnormally dry;
7/1/14 – 10 percent abnormally dry or worse; and 2 percent in moderate drought.

The Virginia Drought Monitoring Task Force, a collaboration of state and federal agencies, issued its most recent Drought Status Report on June 17, 2015.   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 next report is scheduled for July 2015. 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.

Following is an excerpt from the beginning of the June 17, 2015, report, summarizing statewide conditions at that time: “…While precipitation has continued the typical uneven summer pattern due to scattered thunderstorms, some areas, mainly within south-central and southwestern Virginia, are continuing to experience less than normal rainfall.  Stream discharge rates in these areas have been fluctuating between above and slightly below normal ranges, depending upon local rainfall amounts.  Groundwater levels have continued the normal summer decline in nearly all of the observation wells in the Virginia Climate Response Network.

The Drought Monitoring Task Force also produces a daily map rating drought-status indicators.  Shown below is the July 1, 2015.  The status-indicator abbreviations on that map are as follows: GW = groundwater levels, Prcp = precipitation deficits, Res – reservoir storage, and Flow = stream flow conditions. F or 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 VA June 1MORE ON GROUNDWATER LEVELS

More 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).

DROUGHT ELSEWHERE

The June 30, 2015, U.S. Drought Monitor rated 41.7 percent of the United States (including all or parts of 42 states) as being abnormally dry or worse, and it rated about 13 percent of the country (including all or parts of 12 states), as being in severe drought or worse (categories D2, D3, and D4).

The nationwide percentages for abnormally dry or worse (D0-D4) and severe or worse (D2-D4) in the previous three months and one year ago were as follows:
5/26/15 – 46.4 percent abnormally dry or worse; 11.9 percent severe drought or worse;
4/28/15 – 48.5 percent abnormally dry or worse; 16.7 percent severe drought or worse;
3/31/15 – 54.0 percent abnormally dry or worse; 15.5 percent severe drought or worse;
7/1/14 – 37.3 percent abnormally dry or worse; 20.9 percent severe drought or worse.

In the following states, over 50 percent of the state was categorized by the June 30 report as being in severe-or-worse drought.

California – 95% (with 71% in extreme or exceptional drought).  California has had over 80 percent of its area categorized in severe-or-worse drought every week since June 25, 2013, and the Golden State had 100 percent in those categories from May 13—July 29, 2014. C alifornia’s current drought began in late 2011 and early 2012.

Nevada – 87% (with 48% in extreme or exceptional drought).

Oregon – 84% (with 34% in extreme drought).

7/14/15 addition: On the other hand, here are some comments from the July 14, 2015 Drought Monitor on near-record wet conditions in June 2015 in several parts of the United States, including areas of  Virginia:

“According to the NOAA National Centers for Environmental Information (NCEI) statewide precipitation rankings, both Virginia and West Virginia experienced near-record precipitation totals for the month of June as well as near-record heat across most of the region.

“According to the NOAA NCEI statewide precipitation rankings (based on the last 121 years) for the period of April through June, portions of the Midwest experienced near record wettest with the following rankings: Illinois (118/121), Indiana (117/121), and Ohio (116/121).

“According to the …NCEI, the Northeast region experienced one of its wettest Junes for the period of record from 1895 to 2015.

“According to the [National Weather Service] in San Angelo (TX), …Texas experienced the wettest January through June period on record (1895–2015), according to NOAA NCEI.”

7/27/15 addition: As for temperatures in June 2015, here’s a comment from the July 21, 2105, Drought Monitor on near-record average temperature nationwide, and record high average temperature in several states, for June 2015:
“According to the National Centers for Environmental Information (NCEI) climatological rankings, the contiguous U.S. average temperature for June was the second hottest in the observational record (1895–2015). On a state level, California, Idaho, Oregon, Utah, and Washington all experienced their hottest average-temperature Junes on record since 1895.”

For a look ahead, the National Weather Service/Climate Prediction Center’s “U.S. Seasonal Drought Outlook” for the next 90 days is available at http://www.cpc.ncep.noaa.gov/products/expert_assessment/sdo_summary.html. Shown below is the outlook map available on July 1, 2015.

Drought Outlook US


PREVIOUS MONTHLY WATER-STATUS REPORTS

For previous Water Central News Grouper monthly posts on water status in Virginia, Please see this link: https://vawatercentralnewsgrouper.wordpress.com/?s=Water+Status.

Net-zero Energy and Net-zero Water Challenge in 2015-16 at Chesapeake Bay Foundation’s Brock Environmental Center in Virginia Beach

On April 1, 2015, the Chesapeake Bay Foundation (CBF) began a year-long challenge to use net-zero energy or water—that is, no more energy or water than is produced on-site from renewable sources—at the organization’s Brock Environmental Center in Virginia Beach.  The building, first opened in 2014, has wind turbines and solar panels to produce electricity.  The Center also has two 1700-gallon cisterns to collect rainwater that is treated and stored for building use; CBF states that the Center is the first commercial building in the United States to have a permit for treating and using rain water for drinking water.  Several other aspects of the building were designed to reduce energy use, water use, and waste production.

Those interested in following the progress of the challenge can do so online at http://cbf.org/brockdashboard.

Additional sources:
CBF’s new Brock center in VA goes off power, water grids, commentary by CBF President William Baker, Bay Journal, May 2015.

Cutting-Edge Environmental Center Opens at Pleasure House Point in Virginia Beach, Richmond Times-Dispatch, 11/20/14.

Multi-year Drought Impacts on Hydropower in Western U.S. Described in Winter 2015 Issue of Arizona Water Resource

Drought Diminshes Hydropower Capacity in Western U.S., by Mary Ann Capehart, Arizona Water Resource, Winter 2015, from the Arizona Water Resources Research Center in Tucson.

This two-page article gives an introduction to the role of hydroelectric power in the western United States–particularly along the Colorado River—and describes some of the impacts of the current multi-year drought on hydropower production in several western states.

The article is online at https://wrrc.arizona.edu/drought-diminishes-hydropower, or contact the Arizona center at (520) 621-9591, or e-mail: wrrc@cals.arizona.edu.

Hoover Dam from BLM Web site

Hoover Dam and Lake Mead along the Colorado River between Arizona and Nevada. Lake Mead is highest-volume reservoir in the United States. Photo courtesy of the U.S. Bureau of Reclamation, accessed online at http://www.usbr.gov/lc/hooverdam/gallery/picindex.html, 6/10/15.

Virginia Water Status Report as of the End of May 2015, 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 May 2015. 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).

Precipitation Icon by George Wills

Here are National Weather Service (NWS) preliminary (still needing verification) precipitation totals for May 2015 at 11 Virginia or near-Virginia locations, along with the normal for this month of the year at each location; note the record monthly lows at Bristol and Danville. Also shown are the precipitation totals at each location for the previous 12 months and the normal annual precipitation for each location. All values are in inches.

Location May 2015

Precipitation

 

Normal for Month June 2014-May 2015 Precipitation

 

Normal Annual Precipitation
Blacksburg 2.24 4.33 40.00 40.89
Bluefield (Merc. Co. airport, near Va.-W.Va. state line) 1.82 4.31 41.38 39.63
Bristol (Tri-Cities Airport in Tenn., about 20 miles from Bristol, Va.-Tenn.) 0.70 – record low for May at this location 3.80 41.04 41.01
Charlottesville (Char.-Albemarle Airport) 1.82 3.98 33.06 42.71
Danville 1.12 – record low for May at this location 3.88 34.47 44.41
Lynchburg 1.66 3.73 37.06 41.57
Norfolk 1.51 3.41 45.67 46.53
Richmond 1.61 3.78 37.68 43.60
Roanoke 1.75 4.06 38.81 41.25
Wallops Island (Accomack County) 2.73 2.95 39.54 40.84
Washington-Dulles Airport (Loudoun County) 2.46 4.55 35.58 41.54

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 provisional (still needing verification) maps of the percent-of-normal precipitation for the previous 30 days, 60 days, and 90 days, through May 31, 2015.
Precip perc 30 day May 31Precip perc 60 day May 31Precip perc 90 day May 31

 Stream flow icon by George Wills

According to the U.S. Geological Survey WaterWatch for Virginia (online at http://waterwatch.usgs.gov/classic.php?m=mv01d&r=va&w=real%2Cmap), average stream flow values for May 2015 at 151 stream gages in Virginia and just beyond the state border were in the normal range at about 63 percent of gages, below normal at about 28 percent, and much below normal at about 9 percent. The color-coded, flow-percentile map for this period is shown below. 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 May KEEP on deskto - Stream flow code graph

Drought Watch icon by George Wills DROUGHT IN VIRGINIA

The weekly National Drought Monitor map from the University of Nebraska-Lincoln (http://droughtmonitor.unl.edu/) for May 26, 2015, showed about 32 percent of Virginia as abnormally dry, covering an area from far southwestern Virginia across the Commonwealth’s southern tier as far east as Sussex County. Before this week, Virginia had been categorized as drought-free since the Drought Monitor report for April 21, 2015. Before that, some area of Virginia had been categorized as at least “abnormally dry” since the Drought Monitor report for April 22, 2014.

The Drought Monitor notes that it “focuses on broad-scale conditions [and] local conditions may vary.” The Drought Monitor categories are as follows:
D0 = abnormally dry;
D1 = moderate drought;
D2 = severe drought;
D3 = extreme drought;
D4 = exceptional drought.

For comparison, here are Virginia ratings from previous Drought Monitors from about one month, two months, three months, and one year ago:
4/28/15 – drought-free;
3/31/15 – 14 percent abnormally dry;
3/3/15 – 31 percent abnormally dry;
5/27/14 – 8 percent abnormally dry.

The Virginia Drought Monitoring Task Force, a collaboration of state and federal agencies, issued its most recent Drought Status Report on May 19, 2015. 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 next report is scheduled for June 2015. 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 Drought Monitoring Task Force also produces a daily map rating drought-status indicators. Shown below is the May 29, 2015, map. 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 Status VA May 29

MORE ON GROUNDWATER LEVELS

More 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).

DROUGHT ELSEWHERE

The May 26, 2015, U.S. Drought Monitor rated 46.4 percent of the United States (including all or parts of 48 states) as being abnormally dry or worse, and it rated 11.9 percent of the country (including all or parts of 9 states), as being in severe drought or worse (categories D2, D3, and D4). (This was the lowest nationwide percentage of severe-or-worse since the March 15, 2011, Drought Monitor, when 10.9% of the country was rated in severe-or-worse drought. On August 7, 2012, 38.5 percent of the country was in the three worst categories; that was the highest percentage in these categories reported by the Drought Monitor since it began in 2000.)

The nationwide percentages for abnormally dry or worse (D0-D4) and severe or worse (D2-D4) in the previous three months and one year ago were as follows:
4/28/15 – 48.5 percent abnormally dry or worse; 16.7 percent severe drought or worse;
3/31/15 – 54.0 percent abnormally dry or worse; 15.5 percent severe drought or worse;
3/3/15 – 49.4 percent abnormally dry or worse; 13.1 percent severe drought or worse;
5/27/14 – 40.5 percent abnormally dry or worse; 23.2 percent severe drought or worse.

In the following states, over 50 percent of the state was categorized by the May 26 report as being in severe-or-worse drought.

California – 94% (with 67% in extreme or exceptional drought).  California has had over 90 percent of its area categorized in severe-or-worse drought every week since February 11, 2014, and the Golden State had 100 percent in those categories from May 13—July 29, 2014).

Nevada – 87% (with 49% in extreme or exceptional drought).

Oregon – 68% (with 34% in extreme drought).

For a look ahead, the National Weather Service/Climate Prediction Center’s “U.S. Seasonal Drought Outlook” for the next 90 days is available at http://www.cpc.ncep.noaa.gov/products/expert_assessment/sdo_summary.html. Shown below is the outlook map available on June 1, 2015.

Drought outlook US 90 days as of May 21

PREVIOUS MONTHLY WATER-STATUS REPORTS

Please see this link: https://vawatercentralnewsgrouper.wordpress.com/?s=Water+Status.