Explore general as well as scientific information about the movement, chemistry and biology of area surface and ground water environments.
The following data are summarized as seasonal average values for lake and river sampling locations located within the watershed. While these data are useful to serve as a general picture of watershed health, these data must be viewed with caution because these samples have been taken from ecologically different water resources.
Season | Total Nitrogen | Nitrate (NO3) | Total Phosphorus | Orthophosphate | Number of Sample Stations | Number of Samples |
---|---|---|---|---|---|---|
APR-JUN 2024 | 1,605 ug/l | 1,514 ug/l | 7 | 7 | ||
JAN-MAR 2024 | 1,094 ug/l | 457.8 ug/l | 377 ug/l | 0.24 mg/l | 93 | 178 |
OCT-DEC 2023 | 1,239 ug/l | 517.5 ug/l | 409 ug/l | 0.34 mg/l | 116 | 227 |
JUL-SEP 2023 | 1,458 ug/l | 294.1 ug/l | 544 ug/l | 0.5 mg/l | 97 | 190 |
APR-JUN 2023 | 1,122 ug/l | 288.9 ug/l | 522 ug/l | 0.4 mg/l | 107 | 243 |
JAN-MAR 2023 | 1,245 ug/l | 495.0 ug/l | 403 ug/l | 0.35 mg/l | 128 | 268 |
OCT-DEC 2022 | 1,314 ug/l | 409.2 ug/l | 499 ug/l | 0.42 mg/l | 128 | 276 |
JUL-SEP 2022 | 1,239 ug/l | 473 ug/l | 0.34 mg/l | 124 | 235 | |
APR-JUN 2022 | 1,082 ug/l | 383.7 ug/l | 483 ug/l | 0.38 mg/l | 126 | 266 |
JAN-MAR 2022 | 1,099 ug/l | 530.8 ug/l | 363 ug/l | 0.32 mg/l | 130 | 274 |
Five Year Seasonal Graph | ||||||
Five Year Graph of All Samples |
Season | Total Nitrogen | Nitrate (NO3) | Total Phosphorus | Orthophosphate | Number of Sample Stations | Number of Samples |
---|---|---|---|---|---|---|
APR-JUN 2024 | 1,257 ug/l | 215 ug/l | 6 | 6 | ||
JAN-MAR 2024 | 1,847 ug/l | 227 ug/l | 0.08 mg/l | 10 | 15 | |
OCT-DEC 2023 | 1,503 ug/l | 104 ug/l | 0.1 mg/l | 36 | 43 | |
JUL-SEP 2023 | 1,155 ug/l | 61 ug/l | 0.13 mg/l | 56 | 115 | |
APR-JUN 2023 | 1,896 ug/l | 104 ug/l | 0.1 mg/l | 50 | 72 | |
JAN-MAR 2023 | 1,453 ug/l | 66 ug/l | 0.07 mg/l | 63 | 125 | |
OCT-DEC 2022 | 1,120 ug/l | 67 ug/l | 0.14 mg/l | 60 | 97 | |
JUL-SEP 2022 | 1,008 ug/l | 56 ug/l | 0.09 mg/l | 63 | 122 | |
APR-JUN 2022 | 1,350 ug/l | 71 ug/l | 0.08 mg/l | 71 | 148 | |
JAN-MAR 2022 | 1,430 ug/l | 86 ug/l | 0.08 mg/l | 59 | 82 | |
Five Year Seasonal Graph | ||||||
Five Year Graph of All Samples |
Southwest Florida Water Management District calculates the Aquifer Resource Indicator (ARI) for their three groundwater regions each month. The ARI was created to provide the public with a gauge of groundwater levels in their area, so they can develop an understanding of the severity and cycles of drought and recovery. The three regions include: North (Citrus, Hernando, Lake, Levy, Marion, and Sumter counties), Central (Hillsborough, Pasco, Pinellas, and Polk counties), and South (Charlotte, DeSoto, Hardee, Highlands, Manatee, and Sarasota counties). Learn More about the Aquifer Resource Indicator >>
To determine the ARI for a region, each well is compared weekly to its respective low-normal value and the difference is calculated. The weekly differences are reduced to a monthly value for all monitoring wells within a region, and the resulting ARI value represents how far water levels in the aquifer must rise or fall to reach their respective low-normal values.
Stream level and flow data for the Hillsborough Bay Watershed. Learn More about Stream Flow »
River | Flows Whole River Range | Flows Data by Segment | Levels Whole River Range | Levels Data By Segment |
---|---|---|---|---|
Alafia River |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
||
Alafia River - North Prong |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
||
Alafia River - South Prong |
Average river flow is slower than it has been historically. |
Average water levels are higher than they have been historically. |
||
Archie Creek |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
||
Baker Creek |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
||
Blackwater Creek |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
||
Bullfrog Creek |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
||
Delaney Creek |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
||
Delaney Creek Popoff Canal |
Average river flow is the same as it has been historically. |
Average water levels are higher than they have been historically. |
||
Flint Creek |
NO DATA Recent river flow data is unavailable. |
|
Average water levels are lower than they have been historically. |
|
Hillsborough River |
Average river flow is slower than it has been historically. |
Average water levels are higher than they have been historically. |
||
Little Alafia River |
NO DATA Recent river flow data is unavailable. |
|
Average water levels are lower than they have been historically. |
|
Thirtymile Creek |
NO DATA Recent river flow data is unavailable. |
|
Average water levels are higher than they have been historically. |
|
Trout Creek |
Average river flow is slower than it has been historically. |
Average water levels are lower than they have been historically. |
||
Bellows Lake Outlet |
Average river flow is the same as it has been historically. |
Average water levels are higher than they have been historically. |
||
Cypress Creek |
Average river flow is slower than it has been historically. |
Average water levels are higher than they have been historically. |
||
Curiosity Creek |
Average river flow is the same as it has been historically. |
Average water levels are the same as they have been historically. |
||
North Archie Creek |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
||
Fivemile Creek |
Average river flow is slower than it has been historically. |
Average water levels are higher than they have been historically. |
||
Fox Branch |
Average river flow is faster than it has been historically. |
Average water levels are higher than they have been historically. |
Source(s): Not Available
Source(s): Not Available