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Symbol Package
Impervious surfaces like roofs and parking lots cannot absorb water. A large volume of rainfall in a relatively short period of time produces runoff, which carries sediments and chemicals into bodies of water. Storm drains cannot always handle the volume of water, or get backed up for other reasons, creating puddles like this one in a parking lot. Video taken in Arnold, Maryland.
Stormwater runoff
Coastal flooding that occurs on sun, storm-free days can be caused by unusually high tides. Offshore storms can contribute to these tides, but are not always the cause. During these events, coastal storm drains can back up and flood streets and walkways. Video taken in Eastport, Annapolis, Maryland.
Tidal or nuisance flooding
This diagram, from the 2021 Maryland Coastal Adaptation Report Card, shows the changes that threaten coastal communities (white font) alongside adaptation actions (blue font) that can alleviate the impacts of those changes.
Coastal changes and adaptations
Front view (2d) of a River Birch tree.
Betula nigra (River Birch)
At an Aug 2016 report card workshop in Sisal Mexico, scientists and representatives from the local government and private sector assembled to begin the process of developing an ecosystem health assessment of the Yucatan State coastline. This map diagram reflects the three possible ecosystem health indicators (biodiversity, habitat, and water) chosen by workshop participants and their preliminary qualitative assessment of the condition of those indicators.
A preliminary qualitative assessment of ecosystem…
At an Aug 2016 report card workshop in Sisal Mexico, scientists and representatives from the local government and private sector assembled to begin the process of developing an ecosystem health assessment of the Yucatan State coastline. This map diagram shows the approximate locations of the natural resources and human activities in this region.
The natural resources and human activities of the…
At an Aug 2016 report card workshop in Sisal Mexico, scientists and representatives from the local government and private sector assembled to begin the process of developing an ecosystem health assessment of the Yucatan State coastline. This diagram reflects the group consensus of the ecological values of and threats to this region.
The Yucatan State Coast of Mexico has an…
Icon representing coastal flooding.
Flooding
The degraded coral reefs of Mexico's east coast need clean, clear water to survive.
Coral reefs of Mexico are in jeopardy
This diagram depicts potential indicators for the Arkansas River and Red River sub-basin, one of the five major sub-basins of the Mississippi River.
Potential indicators for the Arkansas River and…
A diagram illustrates the flow capacity for the Mississippi River in thousands of cubic feet per second, based on the 1956 project design flood. The Ohio river is the 200,000 square-mile eastern drainage of the Mississippi River watershed. Diagram from
Flow Capacity for the Mississippi River
The diagram lists potential indicators for the Ohio River Basin that were generated at the workshop. The goals listed in this diagram are representative of the things people value in the Ohio River Basin watershed.
Potential Indicators for the Ohio River Basin
Several connections were made at the Lower Mississippi River Basin workshops. These connections will be used to develop a basin-wide report card for the watershed.
Lower Mississippi Workshop Connections
During monsoon season excess sediment is deposited in Chilika Lake, mostly from Mahanadi River tributaries, nearby settlements, and agricultural lands. As the Lake becomes more shallow and its sea outlets fill in with sediment, increased flooding occurs.
Chilika Lake Sedimentation
Illustration of a concrete weir
Weir
View of Lower Antelope Canyon near Page, Arizona.
Antelope Canyon
Detention pond at flood, in Maryland.
Detention pond at flood
Car driving through flooding waters in Maryland.
Flooding
Infiltration trench in parking lot, in Maryland.
Infiltration trench in parking lot
Stormwater ditch full during heavy rains.
Stormwater ditch
Cows grazing along a stormwater ditch during heavy rains.
Stormwater ditch with cows
Stormwater trash in parking lot, in Maryland.
Stormwater trash in parking lot
Elevated utility to prevent flood damage.
Elevated utility
Raising a house to mitigate the effects of flooding.
Raising a house for flooding
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