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Images from USGS Chesapeake Bay reports and field activities are available to visualize and help translate the science. They are available for your use, just please cite the USGS as the source of respective images.

Interactive UAS Science Exhibit on display in Reston

May 14, 2024

#### Interactive UAS Science Exhibit on display in Reston

link

Interactive UAS Science Exhibit on display in Reston

Included in this display are some of the earliest UAS platforms operated by the USGS and an interactive touch screen table that provides access to additional information and videos.

Geosciences and Environmental Change Science Center

May 14, 2024

#### Interactive UAS Science Exhibit on display in Reston

link

#### Interactive UAS Science Exhibit on display in Reston

link

Interactive UAS Science Exhibit on display in Reston

Included in this display are some of the earliest UAS platforms operated by the USGS and an interactive touch screen table that provides access to additional information and videos.

Geosciences and Environmental Change Science Center

War Branch, Shenandoah Valley Rural Stream

May 1, 2024

#### War Branch, Shenandoah Valley Rural Stream

link

War Branch is a tributary of Smith Creek in the Shenandoah Valley. This location is a part of the Small Agricultural Watersheds monitoring project.

Chesapeake Bay Activities

May 1, 2024

#### War Branch, Shenandoah Valley Rural Stream

link

#### War Branch, Shenandoah Valley Rural Stream

link

War Branch is a tributary of Smith Creek in the Shenandoah Valley. This location is a part of the Small Agricultural Watersheds monitoring project.

Chesapeake Bay Activities

Series of maps showing modeled stream incision levels for 2002 and 2018 in Montgomery County, MD

May 1, 2024

#### Series of maps showing modeled stream incision levels for 2002 and 2018 in Montgomery County, MD

link

Extent of each study watershed exhibiting characteristics of no incision (blue), moderate incision (orange), and severe incision (red) for the 2002 and 2018 time periods. Boxes A–D on stream networks correspond to photo examples shown below. Photo A taken November 2016, photos B and C taken October 2016, and photo D taken April 2022.

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

May 1, 2024

#### Series of maps showing modeled stream incision levels for 2002 and 2018 in Montgomery County, MD

link

#### Series of maps showing modeled stream incision levels for 2002 and 2018 in Montgomery County, MD

link

Extent of each study watershed exhibiting characteristics of no incision (blue), moderate incision (orange), and severe incision (red) for the 2002 and 2018 time periods. Boxes A–D on stream networks correspond to photo examples shown below. Photo A taken November 2016, photos B and C taken October 2016, and photo D taken April 2022.

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

Graphical abstract showing phosphate discharged from the Susquehanna River to the Chesapeake Bay could be derived by desorpti

February 1, 2024

#### Graphical abstract showing phosphate discharged from the Susquehanna River to the Chesapeake Bay could be derived by desorpti

link

Phosphate discharged from the Susquehanna River to the Chesapeake Bay could be derived, in part, by desorption from legacy sediments accumulated in impoundments along the lower reaches of the river owing to increasing pH of the river water over recent decades.

Chesapeake Bay Activities, Chesapeake Bay Activities

February 1, 2024

#### Graphical abstract showing phosphate discharged from the Susquehanna River to the Chesapeake Bay could be derived by desorpti

link

#### Graphical abstract showing phosphate discharged from the Susquehanna River to the Chesapeake Bay could be derived by desorpti

link

Phosphate discharged from the Susquehanna River to the Chesapeake Bay could be derived, in part, by desorption from legacy sediments accumulated in impoundments along the lower reaches of the river owing to increasing pH of the river water over recent decades.

Chesapeake Bay Activities, Chesapeake Bay Activities

Difficult Run monitoring station in Great Falls, VA

June 14, 2023

#### Difficult Run monitoring station in Great Falls, VA

link

The stream gage at the Difficult Run Near Great Falls, VA monitoring station. This site is a part of the USGS Nontidal Network.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center

June 14, 2023

#### Difficult Run monitoring station in Great Falls, VA

link

#### Difficult Run monitoring station in Great Falls, VA

link

The stream gage at the Difficult Run Near Great Falls, VA monitoring station. This site is a part of the USGS Nontidal Network.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center

Water quality sondes at Difficult Run

June 14, 2023

#### Water quality sondes at Difficult Run

link

Water quality monitoring sondes installed at Difficult Run Near Great Falls, VA. Part of the USGS nontidal network.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Chesapeake Bay Activities

June 14, 2023

#### Water quality sondes at Difficult Run

link

#### Water quality sondes at Difficult Run

link

Water quality monitoring sondes installed at Difficult Run Near Great Falls, VA. Part of the USGS nontidal network.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Chesapeake Bay Activities

Measuring water quality parameters at Accotink Creek

June 14, 2023

#### Measuring water quality parameters at Accotink Creek

link

A USGS hydrotech uses a water quality sonde to measure conditions at Accotink Creek Near Annandale, VA. This monitoring station is part of the USGS nontidal network.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Virginia and West Virginia Water Science Center

June 14, 2023

#### Measuring water quality parameters at Accotink Creek

link

#### Measuring water quality parameters at Accotink Creek

link

A USGS hydrotech uses a water quality sonde to measure conditions at Accotink Creek Near Annandale, VA. This monitoring station is part of the USGS nontidal network.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Virginia and West Virginia Water Science Center

Accotink Creek near Annandale

June 14, 2023

#### Accotink Creek near Annandale

link

Accotink Creek is an urban creek in the Potomac watershed. Like many urban streams, it suffers from bank erosion, leading to high suspended sediment loads, steep banks, and fallen trees.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Chesapeake Bay Activities

June 14, 2023

#### Accotink Creek near Annandale

link

#### Accotink Creek near Annandale

link

Accotink Creek is an urban creek in the Potomac watershed. Like many urban streams, it suffers from bank erosion, leading to high suspended sediment loads, steep banks, and fallen trees.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Chesapeake Bay Activities

Taking water quality samples from a bridge over an urban creek

June 14, 2023

#### Taking water quality samples from a bridge over an urban creek

link

A water quality sampling bottle used to collect samples from S F Quantico Creek Near Independent Hill, VA. This site is part of the USGS nontidal network.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Chesapeake Bay Activities

June 14, 2023

#### Taking water quality samples from a bridge over an urban creek

link

#### Taking water quality samples from a bridge over an urban creek

link

A water quality sampling bottle used to collect samples from S F Quantico Creek Near Independent Hill, VA. This site is part of the USGS nontidal network.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Chesapeake Bay Activities

Water Quality Sampling at Accotink Creek

June 14, 2023

#### Water Quality Sampling at Accotink Creek

link

A USGS hydrotech conducts horizontally-integrated synoptic water quality sampling at Accotink Creek Near Annandale, VA.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center

June 14, 2023

#### Water Quality Sampling at Accotink Creek

link

#### Water Quality Sampling at Accotink Creek

link

A USGS hydrotech conducts horizontally-integrated synoptic water quality sampling at Accotink Creek Near Annandale, VA.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center

Collecting water samples from the James River

June 6, 2023

#### Collecting water samples from the James River

link

A USGS hydrologist conducts horizontally-integrated synoptic water sampling of the James River at Cartersville as part of the USGS's nontidal network monitoring efforts.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Chesapeake Bay Activities

June 6, 2023

#### Collecting water samples from the James River

link

#### Collecting water samples from the James River

link

A USGS hydrologist conducts horizontally-integrated synoptic water sampling of the James River at Cartersville as part of the USGS's nontidal network monitoring efforts.

Chesapeake Bay Activities, Virginia and West Virginia Water Science Center, Chesapeake Bay Activities

Aerial imagery from Anne Arundel County, Maryland

March 13, 2023

#### Aerial imagery from Anne Arundel County, Maryland

link

The animation in the figure shows aerial imagery from Anne Arundel County, Maryland, collected by National Agricultural Imagery Program (NAIP), followed by 1-meter Chesapeake Bay Land Cover (13 classes) and Land Use/Land Cover (54 classes) data products.

Chesapeake Bay Activities, Lower Mississippi-Gulf Water Science Center

March 13, 2023

#### Aerial imagery from Anne Arundel County, Maryland

link

#### Aerial imagery from Anne Arundel County, Maryland

link

The animation in the figure shows aerial imagery from Anne Arundel County, Maryland, collected by National Agricultural Imagery Program (NAIP), followed by 1-meter Chesapeake Bay Land Cover (13 classes) and Land Use/Land Cover (54 classes) data products.

Chesapeake Bay Activities, Lower Mississippi-Gulf Water Science Center

Updated short-term nitrogen and phosphorous trends in the Chesapeake Bay

January 1, 2023

#### Updated short-term nitrogen and phosphorous trends in the Chesapeake Bay

link

An illustration of updated short-term nitrogen and phosphorous trends in the Chesapeake Bay

Chesapeake Bay Activities, Chesapeake Bay Activities

January 1, 2023

#### Updated short-term nitrogen and phosphorous trends in the Chesapeake Bay

link

#### Updated short-term nitrogen and phosphorous trends in the Chesapeake Bay

link

An illustration of updated short-term nitrogen and phosphorous trends in the Chesapeake Bay

Chesapeake Bay Activities, Chesapeake Bay Activities

Trends in nitrogen, phosphorus, and suspended-sediment loads for RIM (2021)

December 1, 2022

#### Trends in nitrogen, phosphorus, and suspended-sediment loads for RIM (2021)

link

Summary of long-term (1985-2021) and short-term (2012-2021) trends in nitrogen, phosphorus, and suspended-sediment loads for the River Input Monitoring stations. “Improving” or “Degrading” trends are classified as likelihood estimates greater than or equal to 67 percent, whereas “No trend” estimates are greater than 33 and less than 67 percent.

Chesapeake Bay Activities

December 1, 2022

#### Trends in nitrogen, phosphorus, and suspended-sediment loads for RIM (2021)

link

#### Trends in nitrogen, phosphorus, and suspended-sediment loads for RIM (2021)

link

Summary of long-term (1985-2021) and short-term (2012-2021) trends in nitrogen, phosphorus, and suspended-sediment loads for the River Input Monitoring stations. “Improving” or “Degrading” trends are classified as likelihood estimates greater than or equal to 67 percent, whereas “No trend” estimates are greater than 33 and less than 67 percent.

Chesapeake Bay Activities

Map of surface water sampling locations in the Chesapeake Bay Watershed

December 1, 2022

#### Map of surface water sampling locations in the Chesapeake Bay Watershed

link

Surface water sampling locations (n = 244) in the Chesapeake Bay Watershed shown with EPA Level 3 Ecoregions.

Chesapeake Bay Activities, Chesapeake Bay Activities

December 1, 2022

#### Map of surface water sampling locations in the Chesapeake Bay Watershed

link

#### Map of surface water sampling locations in the Chesapeake Bay Watershed

link

Surface water sampling locations (n = 244) in the Chesapeake Bay Watershed shown with EPA Level 3 Ecoregions.

Chesapeake Bay Activities, Chesapeake Bay Activities

Impairments in creeks caused by altered geomorphology and  high nutrients from sedimentation and  agricultural runoff

November 1, 2022

#### Impairments in creeks caused by altered geomorphology and  high nutrients from sedimentation and  agricultural runoff

link

Impairments in Linganore Creek in Maryland (top) and Little Conestoga Creek in Pennsylvania (bottom) caused by altered geomorphology and high nutrients from sedimentation and agricultural runoff.

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

November 1, 2022

#### Impairments in creeks caused by altered geomorphology and  high nutrients from sedimentation and  agricultural runoff

link

#### Impairments in creeks caused by altered geomorphology and  high nutrients from sedimentation and  agricultural runoff

link

Impairments in Linganore Creek in Maryland (top) and Little Conestoga Creek in Pennsylvania (bottom) caused by altered geomorphology and high nutrients from sedimentation and agricultural runoff.

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

Collecting water quality samples from the New River Gorge

September 14, 2022

#### Collecting water quality samples from the New River Gorge

link

Collecting water quality samples from the New River Gorge in support of USGS-NPS partnership.Fall 2022 Photo Contest Winner: Matt Kearns, USGS at Work category

Virginia and West Virginia Water Science Center

September 14, 2022

#### Collecting water quality samples from the New River Gorge

link

#### Collecting water quality samples from the New River Gorge

link

Collecting water quality samples from the New River Gorge in support of USGS-NPS partnership.Fall 2022 Photo Contest Winner: Matt Kearns, USGS at Work category

Virginia and West Virginia Water Science Center

Side-by-side panels to show land use/land cover (LULC) change in Charles County, MD from 2014-2018

September 1, 2022

#### Side-by-side panels to show land use/land cover (LULC) change in Charles County, MD from 2014-2018

link

New development (red, black, yellow) near the towns of Waldorf and La Plata in Charles County, Maryland from 2014-2018.

Chesapeake Bay Activities

September 1, 2022

#### Side-by-side panels to show land use/land cover (LULC) change in Charles County, MD from 2014-2018

link

#### Side-by-side panels to show land use/land cover (LULC) change in Charles County, MD from 2014-2018

link

New development (red, black, yellow) near the towns of Waldorf and La Plata in Charles County, Maryland from 2014-2018.

Chesapeake Bay Activities

Side-by-side panels to show forest harvested for timber in southwest Cumberland County, Virginia from 2014-2018

September 1, 2022

#### Side-by-side panels to show forest harvested for timber in southwest Cumberland County, Virginia from 2014-2018

link

Forest harvested for timber (brown) in southwest Cumberland County, Virginia from 2014-2018.

Chesapeake Bay Activities

September 1, 2022

#### Side-by-side panels to show forest harvested for timber in southwest Cumberland County, Virginia from 2014-2018

link

#### Side-by-side panels to show forest harvested for timber in southwest Cumberland County, Virginia from 2014-2018

link

Forest harvested for timber (brown) in southwest Cumberland County, Virginia from 2014-2018.

Chesapeake Bay Activities

Side-by-side panels to show forest harvested for timber for the development of solar fields in southwest Cumberland County, Virginia from 2014-2018

September 1, 2022

#### Side-by-side panels to show forest harvested for timber for the development of solar fields in southwest Cumberland County, Virginia from 2014-2018

link

Forests in this area of Louisa County, Virginia were recently cleared for timber (brown) and for the development of solar fields (yellow).

Chesapeake Bay Activities

September 1, 2022

#### Side-by-side panels to show forest harvested for timber for the development of solar fields in southwest Cumberland County, Virginia from 2014-2018

link

#### Side-by-side panels to show forest harvested for timber for the development of solar fields in southwest Cumberland County, Virginia from 2014-2018

link

Forests in this area of Louisa County, Virginia were recently cleared for timber (brown) and for the development of solar fields (yellow).

Chesapeake Bay Activities

Differential leveling techniques are performed to determine reference-mark elevations at historic streamgage

August 19, 2022

#### Differential leveling techniques are performed to determine reference-mark elevations at historic streamgage

link

Differential leveling techniques are performed by Alex Wong to determine reference-mark elevations at historic USGS streamgage, 01303000 Mill Neck Creek in Mill Neck, NY.Summer 2022 Photo Contest Winner: Amy Simonson, Where We Work category

Chesapeake Bay Activities, New York Water Science Center

August 19, 2022

#### Differential leveling techniques are performed to determine reference-mark elevations at historic streamgage

link

#### Differential leveling techniques are performed to determine reference-mark elevations at historic streamgage

link

Differential leveling techniques are performed by Alex Wong to determine reference-mark elevations at historic USGS streamgage, 01303000 Mill Neck Creek in Mill Neck, NY.Summer 2022 Photo Contest Winner: Amy Simonson, Where We Work category

Chesapeake Bay Activities, New York Water Science Center

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