Chesapeake Bay. The word Chesepiooc is a Native American word commonly believed to mean “Great Shellfish Bay” or “Great Water”. Quick Facts: Geography.
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The word Chesepiooc is a Native American word commonly believed to mean “Great Shellfish Bay” or “Great Water”.
Susquehanna River, Patapsco River, Choptank River, Patuxent River, Potomac River, Rappahannock River, York River, and James River.
20-30% of forests are stripped for settlements.
less than 30% of the watershed’s original forest remains
Chesapeake 2000 Agreement is signed.
- identifying concerns requiring inter jurisdictional coordination and cooperation;
- collecting, analyzing, and disseminating information pertaining to the region and its resources for the respective legislative bodies;
- recommending legislative and administrative actions necessary to encourage effective and cooperative management of the Bay;
- representing the common interests of the member states as they are affected by the activities of the federal government;
- providing an arbitration forum to serve as an advisory mediator for conflicts among the states.
- 15 legislators (5 per state)
- 3 Governor cabinet members (1 per state)
- 3 citizen representatives (1 per state)
- protect natural resources
- restore habitat and replenish fish stocks
- educate, inspire and engage constituents to take action for the Bay.
Source: Chesapeake Bay Watershed Model
Varying dissolved oxygen levels and overall fish catch in the Chesapeake Bay through July, 2003. Source: Virginia Institute of Marine Science.
During peak summer months, the Chesapeake hypoxic zone has grown to encompass a volume of 11 billion m3.As much as 40% of the Bay in some years has either too little oxygen to support fish and shellfish or not at all.
Nitrogen sources:Urban has the weakest significance level.Land-to-water delivery:Soil permeability was the only significant factor (weakly significant).Q: Why such low significance?A: Lack of data for statistical detail.Instream loss:All are significant.Smaller streams have the highest parameter because there is higher decay in smaller streams.
Nutrient generation is particularly high in areas of south-central Pennsylvania, central Maryland and Virginia, and eastern shore of Maryland and Delaware.(Incremental yields).
Delivered yields are much lower than incremental yields for many reaches particularly those that are far from the Bay, because as travel times increase there is a greater potential for instream loss.
High potential for delivery exists in areas close to the Bay that have short travel times so little potential for instream loss.Also, watershed units associated with large reaches which have lower estimated loss rates so less instream loss.
Point sources are most important in major urban areas where large sewage treatment plants discharge into stream reaches.
Agricultural sources are more widely dispersed.
0.10 kg NO3--N/ha/yr
5.28 kg NO3--N/ha/yr
4.37 kg NO3--N/ha/yr
0.08 kg NO3--N/ha/yr
0.03 kg NO3--N/ha/yr
0.21 kg NO3--N/ha/yr
7.69 kg NO3--N/ha/yr
9.02 kg NO3--N/ha/yr
1.83 kg NO3--N/ha/yr
1.42 kg NO3--N/ha/yr
7.29 kg NO3--N/ha/yr
7.45 kg NO3--N/ha/yr