Current Conditions Yearly Table View
| Select a Year, Sampling Location, and Parameter: | ||
|---|---|---|
2020 Chesapeake Bay Mainstem - Bottom Dissolved Oxygen (mg/L)
Click on hyperlinked stations to view charts of water quality trends.
| Stations | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CB1.0 - Susquehanna River | 13 | 12.6 | 13.5 | 8.1 | 7.7 | 7.3 | 7.5 | |||||
| CB1.1 - Susquehanna River | 12.6 | 12.7 | 8.8 | 7.2 | 5.95 | 7.05 | 8.2 | |||||
| CB2.1 - Turkey Point | 12.4 | 12.4 | 8.3 | 7.8 | 6.2 | 7.35 | 7.7 | |||||
| CB2.2 - Still Pond | 10.6 | 11.9 | 7.1 | 7.6 | 5.75 | 6.1 | 7.1 | |||||
| CB3.1 - Gunpowder Neck | 9.3 | 10.1 | 4.5 | - | 3.3 | 3.85 | 5.3 | |||||
| CB3.2 - Swan Point | 8.4 | 9.6 | 2.4 | - | 1.59 | 1.56 | 4.4 | |||||
| CB3.3W - Bay Bridge (NW) | 2.3 | 2.7 | 4.9 | 3.85 | 3.7 | |||||||
| CB3.3E - Bay Bridge (NE) | 4.9 | 3.4 | 4.3 | 5.95 | 5.3 | |||||||
| CB3.3C - Bay Bridge | 6.7 | 8.4 | 2.6 | 0.64 | 0.48 | 0.48 | 2 | |||||
| CB4.1C - Kent Point (SW) | 5.8 | 8 | 1.1 | 0.53 | 0.64 | 0.44 | 2.4 | |||||
| CB4.1E - Kent Point (S) | 3 | 0.61 | 0.5 | 0.64 | 3.4 | |||||||
| CB4.1W - Horseshoe Point | 3.8 | 3.4 | 3 | 1.75 | 6.6 | |||||||
| CB4.2E - Tilghman Island | 6.9 | 6.2 | 3.65 | 6.8 | 5.5 | |||||||
| CB4.2C - MD Mid Bay | 6.2 | 8.3 | 3 | 0.92 | 0.74 | 0.46 | 3.4 | |||||
| CB4.2W - Plum Point | 4 | 4.3 | 1.46 | 2.2 | 7.3 | |||||||
| CB4.3W - Dares Beach | 3 | 4.4 | 1.81 | 2.45 | 7.2 | |||||||
| CB4.3E - Mouth of Choptank River | 3.7 | 1.1 | 0.8 | 0.63 | 3.6 | |||||||
| CB4.3C - Dares Beach | 6.7 | 8.3 | 4 | 0.7 | 0.7 | 0.63 | 3.3 | |||||
| CB4.4 - Cove Point | 6.5 | 8.9 | 3.8 | 1.04 | 1.06 | 3.7 | ||||||
| CB5.1W - Mouth of Patuxent River | 8.1 | 8.9 | 6.9 | 0 | 5.6 | - | ||||||
| CB5.1 - Cedar Point | 6.8 | 8.9 | 3.9 | 1.03 | 1.22 | 3.8 | ||||||
| CB5.2 - Point No Point | 6.8 | 9.1 | 4.3 | 1.09 | 1.18 | 5.6 | ||||||
| CB5.3 - Smith Point | 7.7 | 9.4 | 4.8 | 1.47 | 2.6 | 6.4 |
| Bottom Dissolved Oxygen (mg/l) | |
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0.0 - 0.2 (anoxia - kills most life) |
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0.2 - 2.0 (hypoxia - harms bottom organisms) |
 |
2.0 - 3.0 (stresses smaller fish and crabs) |
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3.0 - 5.0 (stresses larger fish) |
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5.0 - 10.0 (healthy) |
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10.0 + (could indicate an algal bloom in summer) |
 |
No Data |
| Dissolved oxygen (DO) in the water sustains life for Bay organisms. Nutrients, such as nitrogen and phosphorus, from agricultural, sewer/septic and urban sources can fuel algal blooms that can starve the water of DO. DO levels above 5 mg/l are normally sufficient to support most life. More info on: "Our Monitoring Explained" |
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