This is the fourth annual Midshore Rivers report card. It presents data and information on four different ecological health indicators. It also gives examples of what the public can do to improve health of the rivers.

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This project analyzed existing aquatic sediments, plants, and animals collected throughout the watershed to pinpoint key sources of nitrogen. As submerged aquatic vegetation has disappeared in regions heavily impacted by land-use activities, macroalgae and oysters were deployed and incubated in situ to help trace the origin of nitrogen inputs by identifying, delineating and mapping the relative influence of the varied urban and agricultural land uses in the watershed.

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Climate change will affect Maryland in a variety of ways. More obvious impacts could include an increased risk for extreme events such as drought, storms, flooding, and forest fires; more heat-related stress; the spread of existing or new vector-born disease; and increased erosion and inundation of low-lying areas along the State’s shoreline and coast. Adaptation, together with mitigation, is necessary to address climate change.

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Maryland citizens are blessed with an abundant supply of water. However, many water systems are already stressed during droughts, and infrastructure damage and water contamination occurs during floods. Future population growth will combine with increasingly variable weather patterns to place more communities at risk of property damage, regulatory liabilities and uncertain access to drinking water.

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Risk management is critical in any restoration project. Risks include those associated with climate patterns, such as more intense storms, as well as those associated with land use change, site selection, and design. Addressing these risks in conjunction with ongoing restoration efforts will prepare communities for greater variability and may result in cost savings and reduced risk. Best Management Practices (BMPs) should be sited and designed with climate change impacts in mind.

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Maryland’s extensive aquatic ecosystems range from freshwater swamps and bogs to freshwater rivers and marshes to coastal bays and salt marshes. These ecosystems are influenced by precipitation, temperature, tropical storms, and human activity. Human development and pollution have degraded their natural resilience, leaving them more vulnerable to climate change and extreme events.

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This report card provides a transparent, timely, and geographically detailed assessment of Chesapeake Bay. In 2012, the methods for the report card have changed to include five water quality indicators and two biotic indicators. In 2012, the overall grade for Chesapeake Bay is a 47%, a C. This means the Bay is in moderate health. Fisheries indicators as well as trajectories of reporting region health are also presented. For further details, visit the Report Card website .

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This report card is an assessment of the aquatic health of the Eastern Bay, Choptank, Miles, and Wye Rivers, and is based on data collected by the Midshore Riverkeeper scientists and Midshore Creekwatchers. It is the third annual report card which discusses the status of river health in the midshore during 2012 based on five different indicators.

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This report card provides a transparent, timely, and geographically detailed assessment of Chesapeake Bay. The overall health of Chesapeake Bay, determined using water quality and biotic indicators, declined slightly in 2011. The overall grade of D+ was a decrease for the second year in a row, down from a C- in 2010. Only two reporting regions, the Patapsco and Back Rivers, and the Lower Western Shore (MD), had improved grades in 2011.

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This report card provides a transparent, timely, and geographically detailed assessment of 2010 Chesapeake Bay health. The overall health of Chesapeake Bay, assessed using water quality and biotic indicators, declined slightly in 2010. The overall grade decreased from a C in 2009 to C- in 2010. Only two reporting regions (James River and York River) had improved grades in 2010, three were unchanged, and nine declined.

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