Images

This storm drain a Coliseum Drive is part of the Hampton Roads Regional Water Quality Monitoring Program.

• Site ID: 0167891721 Site Name: Storm Drain at Coliseum Drive at Hampton, VA

The interior of the Storm Drain at Coliseum Drive at Hampton, VA. Part of the Hampton Roads Regional Water Quality Monitoring Program.

USGS researcher Aaron Porter at the Storm Drain at Rivers Ridge Circle near Newport News, VA monitoring site. Part of the Hampton Roads Regional Water Quality Monitoring Program 

USGS researchers Aaron Porter and Chelsea Vande Pol use a handheld acoustic doppler velocimeter to measure streamflow in a stormwater drain as a part of the Hampton Roads Regional Water Quality Monitoring Program.

Non-contact laser doppler velocity meters use a laser to measure water velocity throughout a channel's cross-section, while another part of the device is measuring the depth of water. Together the two datasets are used to compute streamflow.

The Storm Drain at Rivers Ridge Circle near Newport News, VA. This site is a part of the Hampton Roads Regional Water Quality Monitoring Network.

This storm drain a Coliseum Drive is part of the Hampton Roads Regional Water Quality Monitoring Program.

• Site ID: 0167891721 Site Name: Storm Drain at Coliseum Drive at Hampton, VA

The Virginia Coastal Plain is the relatively flat region east of the fall line characterized by a wedge of coarse permeable sediments with interbedded layers of less-permeable silts and clays that thickens towards the east. The region has multiple layered aquifers, including the Potomac aquifer system.

When it comes to measuring land subsidence, sea level rise, and shoreline retreat, the USGS uses a variety of methods, each with their own strengths and drawbacks.

A USGS gage box by the bridge over the Roanoke River at Rts 639/760 at Salem, VA - USGS Water Data for the Nation

The USGS well at Franklin, Virginia (USGS 364059076544901 55B 16) constantly monitors water levels in the Potomac Aquifer and provides scientists with a record of water levels going as far

The USGS Nansemond pipe extensometer (59D 39) showing the triangular table in green and the instrument bridge in yellow above the extensometer. The piers that support the table extend down 65 feet. The movement of the table relative to the extensometer is how land-surface movement is measured.

A GNSS (Global Navigation Satellite System) Receiver mounted atop a GPS (Global Positioning System) tripod for use in a geodetic survey on Virginia's Eastern Shore.

USGS scientist Jim Duda sets up a GPS tripod in preparation for a geodetic survey on Virginia's Eastern Shore.

A GNSS (Global Navigation Satellite System) Receiver mounted atop a GPS (Global Positioning System) tripod for use in a geodetic survey on Virginia's Eastern Shore.

Hydrologic Unit and National Hydrography Dataset Plus Medium Resolution Spatial Scales Example

A scientist taking a soil sample core from floodplain as a part of sediment deposition monitoring. Sediment deposition is monitored along the Long Branch creek in Fairfax County, Virginia as a part of the Fairfax County Water Resources Monitoring Network.

USGS scientists measure the amount of sediment deposition occurring in the floodplains along the Long Branch stream using soil cores. This site is monitored as a part of the Fairfax County Water Resources Monitoring Network.

Photograph of the USGS precipitation gage located at Little Run Elementary in Fairfax County. Data for this station can be found on USGS Water Data For the Nation.

USGS hydrologic technician takes water sample from Castle Creek as part of the Fairfax County Water Resources Monitoring Network. 

Data for this monitoring location can be found at Water Data for the Nation.

A borehole extensometer is an instrument that measures vertical land motion caused by changes in aquifer thickness. A borehole is drilled through the entirety of an aquifer system and the steel pipe is anchored at the base to the basement rock.