Current Conditions Yearly Table View
| Select a Year, Sampling Location, and Parameter: | ||
|---|---|---|
2024 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 | 21.5 | 13 | 11.8 | - | 10.9 | 6.8 | 8.3 | 7.8 | 9.3 | 8.6 | 8.3 | |
| CB1.1 - Susquehanna River | 14.4 | 13 | 10.9 | 10.5 | 8.9 | 7.85 | 7 | 8.15 | 7 | 9.3 | 9.6 | |
| CB2.1 - Turkey Point | 14.2 | 12.5 | 11 | 10.4 | 9.1 | 7.65 | 7.35 | 8.45 | 6 | 9.1 | 9.3 | |
| CB2.2 - Still Pond | 11.3 | 9.1 | 11.1 | 10.4 | 8.6 | 6.55 | 6.15 | 6.95 | 5.7 | 7.5 | 9 | |
| CB3.1 - Gunpowder Neck | 9.5 | 7.6 | 5 | 7.5 | 4.9 | 4.3 | 4.65 | 3.05 | 4.7 | 8 | 8.6 | |
| CB3.2 - Swan Point | 8.7 | 8 | 4.6 | 6.1 | 3.7 | 3.25 | 5.3 | 2.75 | 4.6 | 5.4 | 8.7 | |
| CB3.3W - Bay Bridge (NW) | 5.5 | 7.5 | 4.7 | 5.25 | 5.45 | 6.2 | 5.2 | 4 | ||||
| CB3.3E - Bay Bridge (NE) | 7.4 | 6.7 | 8.3 | 6.65 | 6.65 | 4.55 | 5 | 8 | ||||
| CB3.3C - Bay Bridge | 7.9 | 4.9 | 5.8 | 3.7 | 0.6 | 0.8 | 0.15 | 0.25 | 1.1 | 3.5 | 6.4 | |
| CB4.1C - Kent Point (SW) | 7.9 | - | 6.8 | 3.9 | 0.4 | 0.25 | 0.2 | 0.2 | 0.3 | 3 | 5.6 | |
| CB4.1E - Kent Point (S) | 6.5 | 3.6 | 0.8 | 0.3 | 0.15 | 1.25 | 0.7 | 4.2 | ||||
| CB4.1W - Horseshoe Point | 11.3 | 10.1 | 5.6 | 5.55 | 3.3 | 7.05 | 3.6 | 7.7 | ||||
| CB4.2E - Tilghman Island | 10.9 | 9.4 | 9.1 | 5.2 | 6.7 | 4.95 | 7.9 | 8.9 | ||||
| CB4.2C - MD Mid Bay | 8.6 | - | 8 | 4.1 | 0.6 | 0.3 | 0.45 | 0.45 | 0.4 | 3.5 | 6 | |
| CB4.2W - Plum Point | 11.7 | 9.7 | 1.5 | 5.4 | 4.45 | 5.5 | 5.9 | 7.8 | ||||
| CB4.3W - Dares Beach | 11.8 | 10.4 | 5.4 | 4.75 | 3.3 | 5 | 2.6 | 8 | ||||
| CB4.3E - Mouth of Choptank River | 8 | 4.2 | 1 | 0.45 | 0.2 | 0.8 | 0.4 | 5.8 | ||||
| CB4.3C - Dares Beach | 9.1 | - | 8.2 | 4.3 | 0.6 | 0.3 | 0.45 | 0.4 | 0.6 | 5.4 | 5.6 | |
| CB4.4 - Cove Point | 10.7 | - | 9 | 4.8 | 2.3 | 0.5 | 0.65 | 0.55 | 0.6 | 5.5 | 7 | |
| CB5.1W - Mouth of Patuxent River | 10.7 | 9.3 | 11.4 | 10.2 | 9.5 | 4.7 | 5.6 | 4.2 | - | 7 | 8.3 | |
| CB5.1 - Cedar Point | 10.7 | - | 9.1 | 5 | 3.9 | 0.6 | 0.7 | 0.65 | 0.9 | 5 | 7.3 | |
| CB5.2 - Point No Point | 10.9 | 7.6 | 9.3 | 5.1 | 4.5 | 0.85 | 1.2 | 2.1 | 1.2 | 6.8 | 7.1 | |
| CB5.3 - Smith Point | 11 | 8.6 | 9.8 | 6.1 | 5 | 1.25 | 1.3 | 2.6 | 5.2 | 7.3 | - |
| Bottom Dissolved Oxygen (mg/l) | |
 |
0.0 - 0.2 (anoxia - kills most life) |
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0.2 - 2.0 (hypoxia - harms bottom organisms) |
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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) |
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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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