1. (1) “Minimum flow” means the limit at which further withdrawals would be significantly harmful to the water resources or ecology of the area.
2. (2) “St. Marks River” means the riverine waterbody that originates in eastern Leon County and flows south discharging into Apalachee Bay in Wakulla County.
3. (3) “St. Marks River Near Newport, FL” means USGS Station 02326900 located on the St. Marks River in Wakulla County.
4. (4) “St. Marks River Near Woodville, FL Estimated Daily Flow” means the best available estimate by the District of the daily flow at USGS Station 02326885, District Station 9257, or its successor, located on the St. Marks River in Leon County.
5. (5) “St. Marks River Rise” means the first magnitude spring located within Leon County on the St. Marks River at 30 degrees 16 minutes 34 seconds north latitude and 84 degrees 8 minutes 56 seconds west longitude.
6. (6) “Average Daily Flow” means the arithmetic average of all discharge data points during a calendar day.
7. (7) “Wakulla Spring” means the first magnitude spring located within Wakulla County on the Wakulla River at 84 degrees 18 minutes 10.3 seconds north latitude and 30 degrees 14 minutes 6.7 seconds west longitude.
8. (8) “Sally Ward Spring” means the second magnitude spring located within Wakulla County at 84 degrees 18 minutes 38.9 seconds north latitude and 30 degrees 14 minutes 29.0 seconds west longitude.
9. (9) “Wakulla Spring Daily Flow” means the Average Daily Flow at District Station 749, or its successor. This data is incorporated by reference, effective May 18, 2021, and available at HYPERLINK "http://www.flrules.org/Gateway/reference.asp?No=Ref-13085" http://www.flrules.org/Gateway/reference.asp?No=Ref-13085 and upon request from the Northwest Florida Water Management District, 81 Water Management Drive, Havana, Florida 32333.
10. (10) “Wakulla Spring Average Flow” means the average of the Wakulla Spring Daily Flow between October 23, 2004, and December 31, 2019.
11. (11) “Sally Ward Spring Average Flow” means the average of the manual flow measurements at District Station 774, or its successor, from October 23, 2004, through December 31, 2019. This data is incorporated by reference, effective May 18, 2021, and available at HYPERLINK "http://www.flrules.org/Gateway/reference.asp?No=Ref-13086" http://www.flrules.org/Gateway/reference.asp?No=Ref-13086 and upon request from the Northwest Florida Water Management District, 81 Water Management Drive, Havana, Florida 32333.
12. (12) “Middle Econfina Creek” means the portion of Econfina Creek between County Road 388 in Bay County, Florida and the Williford Spring Group in Washington County, Florida.
13. (13) “Gainer Spring Group” means the first magnitude spring group and associated spring runs located in Bay County at 30 degrees 25 minutes 38.7258 seconds north latitude and -85 degrees 32 minutes 53.7144 seconds west longitude.
14. (14) “Sylvan Spring Group” means the second magnitude spring group and associated spring run located in Washington County at 30 degrees 25 minutes 54.624 seconds north latitude and -85 degrees 32 minutes 53.7822 seconds west longitude.
15. (15) “Williford Spring Group” means the second magnitude spring group and associated spring run located in Washington County at 30 degrees 26 minutes 22.401 seconds north latitude and -85 degrees 32 minutes 51.342 seconds west longitude.
16. (16) “Middle Econfina Creek Average Flow” means the average of Middle Econfina Creek Daily Flow for the most recent 30 years of record. The Middle Econfina Creek Average Flow is inclusive of combined and undivided flow contributions from the Gainer Spring Group, Sylvan Spring Group, and Williford Spring Group.
17. (17) “Middle Econfina Creek Daily Flow” means the Average Daily Flow at USGS Station 02359500 (Econfina Creek Near Bennett, Fla.), or its successor located along Econfina Creek in Bay County, Florida.
18. (18) “Middle Econfina Creek Average Baseline Flow” means the average of Middle Econfina Creek Daily Flow between October 1,1935, and October 14, 2023, adjusted to account for withdrawal impacts.
19. (19) “Jackson Blue Spring” is the first magnitude spring located in Jackson County at 30 degrees 47 minutes 25.8536 seconds north latitude and -85 degrees 08 minutes 24.3181 seconds west longitude.
20. (20) “Jackson Blue Spring Median Flow” means the median of Jackson Blue Spring Daily Flow beginning on January 1, 2005, and extending through present or for the most recent 30 years of record, whichever is shorter.
21. (21) “Jackson Blue Spring Daily Flow” means the average daily flow at Northwest Florida Water Management District Station 005042 (Jackson Blue Spring), or its successor located in Jackson County, Florida.
22. (22) “Jackson Blue Spring Median Baseline Flow” means the median of Jackson Blue Spring Daily Flow values between January 1, 2005, and December 31, 2024, adjusted to remove the impacts of groundwater withdrawals.

Rulemaking Authority 373.044, 373.113 FS. Law Implemented 373.042 FS. History–New 6-12-19, Amended 5-18-21, 6-29-25, 4-28-26.