Florida Administrative Code › 40 - WATER MANAGEMENT DISTRICTS › 40C - St. Johns River Water Management District › Chapter 40C-8 - MINIMUM FLOWS AND LEVELS › Section 40C-8.031 - Minimum Surface Water Levels and Flows and Groundwater Levels

Current through Reg. 50, No. 138; July 16, 2024
(1) The following minimum groundwater levels
				and minimum mean annual spring flows are established:
Spring Name
County
Head
(ft NGVD)
Discharge
(cfs)
Messant Spring
Lake
32
12
Miami Springs
Seminole
27
4
Palm Springs
Seminole
27
7
Rock Springs
Orange
31
53
Sanlando Springs
Seminole
28
15
Seminole Springs
Lake
34
34
Starbuck Springs
Seminole
31
13
Wekiwa Springs
Orange
24
62
(2)
				The following minimum surface water levels and flows are established:
System Name
County
Minimum Level
Level
(ft NGVD)
Flow
(cfs)
Hydroperiod Category
Duration (days)
Return Interval (years)
Black Water Creek at
The SR 44 Bridge
Lake
Infrequent High
27.0
340
-
7
5
Frequent High
25.8
145
-
30
2
Average
24.3
33
-
180
1.7
Frequent Low
22.8
2.5
-
90
15
Phase 1 Restriction
22.7
2.0
-
-
-
Phase 2 Restriction
22.5
1.0
-
-
-
Phase 3 Restriction
22.4
0.6
-
-
-
Phase 4 Restriction
22.3
0.3
-
-
-
Infrequent Low
21.9
0.0
-
7
100
St. Johns River 1.5
miles downstream of
Lake Washington weir
Brevard
Frequent High
15.3
1450
Seasonally Flooded
-
-
Average
12.7
240
Typically Saturated
-
-
Frequent Low
11.3
28
Semipermanently Flooded
-
-
St. Johns River at SR
44 near DeLand
Volusia
Frequent High
1.9
4600
-
30
3
Average
0.8
2050
-
180
1.5
Frequent Low
0.3
1100
-
120
5
Taylor Creek 1.7 miles
downstream of structure
S-164
Frequent High
-
95
Seasonally Flooded
-
-
Average
-
17
Typically Saturated
-
-
Frequent Low
-
0.5
Semipermanently Flooded
-
-
St. Johns River at SR
50 near Christmas
Orange and Brevard
Frequent High
8.1
1950
-
30
2
Average
5.9
580
-
180
1.5
Frequent Low
4.2
140
-
120
5
Infrequent Low
2.7
43
-
60
50
Wekiva River at the SR
46 Bridge
Seminole and Lake
Infrequent High
9.0
880
-
7
5
Frequent High
8.0
410
-
30
2
Average
7.6
240
-
180
1.7
Frequent Low
7.2
200
-
90
3
Phase 1 Restriction
7.0
190
-
-
-
Phase 2 Restriction
6.9
180
-
-
-
Phase 3 Restriction
6.7
160
-
-
-
Phase 4 Restriction
6.5
150
-
-
-
Infrequent Low
6.1
120
-
7
100
(3)
				The following minimum surface water flows are established for Blue Spring in
				Volusia County:
Time Period
Minimum Long Term Mean Flow
December 3, 2006 through March 31, 2009
133 cfs
April 1, 2009 through March 31, 2014
137 cfs
April 1, 2014 through March 31, 2019
142 cfs
April 1, 2019 through March 31, 2024
148 cfs
After March 31, 2024
157 cfs
(4)
				The following minimum surface water levels are established:
System Name
County
Minimum Level
Level
(ft NGVD)
Level
(ft NAVD)
Hydroperiod Category
Duration (days)
Return Interval (years)
(a) Apshawa North
Lake
Frequent High
85.0
83.9
Seasonally Flooded
-
-
Average
83.3
82.2
Typically Saturated
-
-
Frequent Low
81.3
80.2
Semipermanently Flooded
-
-
(b) Apshawa South
Lake
Frequent High
86.0
85.7
Seasonally Flooded
-
-
Average
84.7
83.6
Typically Saturated
-
-
Frequent Low
83.2
82.1
Semipermanently Flooded
-
-
(c) Argenta
Putnam
Frequent High
50.1
49.0
Seasonally Flooded
-
-
Average
47.7
46.7
Typically Saturated
-
-
Frequent Low
46.3
45.3
Semipermanently Flooded
-
-
(d) Ashby
Volusia
Frequent High
12.3
11.3
-
60
2
Frequent Low
11.1
10.2
-
120
5
(e) Banana
Putnam
Frequent High
37.7
36.8
-
30
3
Average
36.7
35.8
-
180
1.7
Frequent Low
33.7
32.8
-
120
5
(f) Bell
Putnam
Frequent High
42.5
44.5
Temporarily Flooded
-
-
Average
40.5
36.4
Typically Saturated
-
-
Frequent Low
38.7
37.9
Semipermanently Flooded
-
-
(g) Big
Volusia
Frequent High
26.1
25.1
Seasonally Flooded
-
-
Average
25.0
24.1
Typically Saturated
-
-
Frequent Low
23.7
22.7
Semipermanently Flooded
-
-
(h) Bird Pond
Putnam
Frequent High
41.8
40.8
Seasonally Flooded
-
-
Average
39.5
38.5
Typically Saturated
-
-
Frequent Low
38.1
37.1
Semipermanently Flooded
-
-
(i) Blue Pond
Clay
Frequent High
174.1
173.1
Temporarily Flooded
-
-
Average
173.3
172.3
Typically Saturated
-
-
Frequent Low
171.7
170.7
Semipermanently Flooded
-
-
(j) Boggy Marsh
Lake
Frequent High
117.3
116.4
Seasonally Flooded
-
-
Average
115.9
115.0
Typically Saturated
-
-
Frequent Low
114.5
113.6
Semipermanently Flooded
-
-
(k) Bowers
Marion
Frequent High
57.1
56.1
Temporarily Flooded
-
-
Average
54.0
53.1
Typically Saturated
-
-
Frequent Low
52.7
51.7
Semipermanently Flooded
-
-
(l) Brantley
Seminole
Frequent High
46.3
45.3
Seasonally Flooded
-
-
Average
45.6
44.6
Typically Saturated
-
-
Frequent Low
44.1
43.1
Semipermanently Flooded
-
-
(m) Broward
Putnam
Frequent High
40.0
39.1
Temporarily Flooded
-
-
Average
38.2
35.8
Typically Saturated
-
-
Frequent Low
36.5
35.6
Semipermanently Flooded
-
-
(n) Burkett
Orange
Frequent High
53.5
52.5
Seasonally Flooded
-
-
Average
52.6
51.6
Typically Saturated
-
-
Frequent Low
51.2
50.2
Semipermanently Flooded
-
-
(o) Charles
Marion
Frequent High
40.2
39.3
Seasonally Flooded
-
-
Average
39.3
38.4
Typically Saturated
-
-
Frequent Low
37.9
36.9
Semipermanently Flooded
-
-
(p) Cherry
Lake
Frequent High
96.0
94.9
Seasonally Flooded
-
-
Average
94.9
93.8
Typically Saturated
-
-
Frequent Low
93.4
92.4
Semipermanently Flooded
-
-
(q) Clear
Putnam
Frequent High
37.4
36.4
Temporarily Flooded
-
-
Average
36.4
35.4
Typically Saturated
-
-
Frequent Low
34.9
34.0
Semipermanently Flooded
-
-
(r) Colby
Volusia
Frequent High
27.6
26.6
-
30
3
Frequent Low
22.9
21.8
-
120
3
(s) Como
Putnam
Frequent High
37.7
36.8
-
30
3
Average
36.7
35.8
-
180
1.7
Frequent Low
33.7
32.8
-
120
5
(t) Como, Little Lake
Putnam
Frequent High
37.7
36.8
-
30
3
Average
34.6
33.7
-
180
1.7
Frequent Low
32.6
31.7
-
120
5
(u) Coon Pond
Volusia
Frequent High
35.7
34.8
Seasonally Flooded
-
-
Average
34.6
33.6
Typically Saturated
-
-
Frequent Low
33.1
32.2
Semipermanently Flooded
-
-
(v) Cowpen
Putnam
Infrequent High
92.0
90.8
30
25
Average
85.2
84.0
180
1.7
Frequent Low
83.5
82.3
120
2.7
(w) Cow Pond
Volusia
Frequent High
40.5
39.5
Seasonally Flooded
-
-
Average
39.8
38.8
Typically Saturated
-
-
Frequent Low
37.6
36.6
Semipermanently Flooded
-
-
(x) Crystal/Baker
Putnam
Frequent High
35.5
34.6
Seasonally Flooded
-
-
Average
33.9
33.0
Typically Saturated
-
-
Frequent Low
33.0
32.1
Semipermanently Flooded
-
-
(y) Daugharty
Volusia
Frequent High
44.8
43.8
Temporarily Flooded
-
-
Average
42.6
41.6
Typically Saturated
-
-
Frequent Low
41.2
40.1
Semipermanently Flooded
-
-
(z) Davis
Volusia
Frequent High
36.2
35.2
Seasonally Flooded
-
-
Average
35.4
34.4
Typically Saturated
-
-
Frequent Low
34.0
33.0
Semipermanently Flooded
-
-
(aa) Deep
Putnam
Frequent High
35.0
34.1
Seasonally Flooded
-
-
Average
33.1
32.2
Typically Saturated
-
-
Frequent Low
32.2
31.3
Semipermanently Flooded
-
-
(bb) Dias
Volusia
Frequent High
34.6
33.5
Seasonally Flooded
-
-
Average
33.5
33.0
Typically Saturated
-
-
Frequent Low
32.2
31.6
Semipermanently Flooded
-
-
(cc) Disston
Flagler
Frequent High
13.8
12.8
Seasonally Flooded
-
-
Average
13.2
12.3
Typically Saturated
-
-
Frequent Low
12.5
11.5
Semipermanently Flooded
-
-
(dd) Dorr
Lake
Frequent High
43.5
42.5
Seasonally Flooded
-
-
Average
43.1
42.1
Typically Saturated
-
-
Frequent Low
42.1
41.0
Semipermanently Flooded
-
-
(ee) Dream Pond
Putnam
Frequent High
49.0
48.0
Seasonally Flooded
-
-
Average
47.5
46.5
Typically Saturated
-
-
Frequent Low
46.0
45.1
Semipermanently Flooded
-
-
(ff) Drudy
Volusia
Frequent High
42.1
41.0
Seasonally Flooded
-
-
Average
40.6
39.5
Typically Saturated
-
-
Frequent Low
39.1
38.1
Semipermanently Flooded
-
-
(gg) Echo
Putnam
Frequent High
38.8
37.9
Seasonally Flooded
-
-
Average
36.7
35.7
Typically Saturated
-
-
Frequent Low
35.2
34.3
Semipermanently Flooded
-
-
(hh) Emma
Lake
Frequent High
94.1
93.0
Seasonally Flooded
-
-
Average
92.5
91.4
Typically Saturated
-
-
Frequent Low
91.1
90.0
Semipermanently Flooded
-
-
(ii) Emporia
Volusia
Frequent High
38.9
37.8
Seasonally Flooded
-
-
Average
35.8
34.7
Typically Saturated
-
-
Frequent Low
34.3
31.6
Semipermanently Flooded
-
-
(jj) Estella
Putnam
Frequent High
38.6
37.7
Seasonally Flooded
-
-
Average
37.2
36.3
Typically Saturated
-
-
Frequent Low
36.5
35.5
Semipermanently Flooded
-
-
(kk) Fox
Brevard
Frequent High
16.7
15.4
Temporarily Flooded
-
-
Average
15.3
14.0
Typically Saturated
-
-
Frequent Low
13.8
12.6
Semipermanently Flooded
-
-
(ll) Georges Lake
Putnam
Frequent High
98.4
97.4
Seasonally Flooded
-
-
Average
97.8
96.9
Typically Saturated
-
-
Frequent Low
97.0
96.1
Semipermanently Flooded
-
-
(mm) Gertie
Volusia
Frequent High
27.5
26.5
Temporarily Flooded
-
-
Average
25.6
24.6
Typically Saturated
-
-
Frequent Low
23.3
22.4
Semipermanently Flooded
-
-
(nn) Gore
Flagler
Frequent High
21.1
20.0
-
30
3
Average
20.6
19.6
-
180
1.5
Frequent Low
19.2
18.2
-
120
5
(oo) Grandin
Putnam
Frequent High
81.5
80.7
-
30
2
Frequent Low
78.6
77.8
-
120
5
(pp) Halfmoon
Marion
Frequent High
49.7
48.6
Seasonally Flooded
-
-
Average
47.9
46.7
Typically Saturated
-
-
Frequent Low
46.5
45.3
Semipermanently Flooded
-
-
(qq) Helen
Volusia
Frequent High
46.1
45.0
Temporarily Flooded
-
-
Average
44.2
43.2
Typically Saturated
-
-
Frequent Low
43.6
42.6
Semipermanently Flooded
-
-
(rr) Hires
Volusia
Frequent High
41.0
40.0
Seasonally Flooded
-
-
Average
39.5
38.5
Typically Saturated
-
-
Frequent Low
38.0
37.0
Semipermanently Flooded
-
-
(ss) Hokey
Volusia
Frequent High
35.4
34.4
Seasonally Flooded
-
-
Average
33.7
32.7
Typically Saturated
-
-
Frequent Low
32.3
31.3
Semipermanently Flooded
-
-
(tt) Hopkins Prairie
Marion
Frequent High
25.8
24.5
Seasonally Flooded
-
-
Average
23.4
22.1
Typically Saturated
-
-
Frequent Low
22.0
20.7
Semipermanently Flooded
-
-
(uu) Howell
Putnam
Frequent High
34.5
33.5
Seasonally Flooded
-
-
Average
33.6
32.7
Typically Saturated
-
-
Frequent Low
31.8
30.9
Semipermanently Flooded
-
-
(vv) Howell
Seminole
Frequent High
53.7
52.7
Seasonally Flooded
Average
52.9
51.9
Typically Saturated
Frequent Low
51.5
50.5
Semipermanently Flooded
(ww) Indian
Volusia
Frequent High
36.2
35.2
30
3
Average
35.0
34.0
180
1.7
Frequent Low
32.8
31.8
120
5
(xx) Irma
Orange
Frequent High
55.1
54.1
Seasonally Flooded
-
-
Average
54.8
53.8
Typically Saturated
-
-
Frequent Low
53.4
52.4
Semipermanently Flooded
-
-
(yy) Kerr
Marion
Infrequent High
25.6
24.6
30
25
Frequent High
23.3
22.3
14
2
Average
21.7
20.7
180
1.7
Frequent Low
20.4
19.4
120
5
(zz) Lizzie
Putnam
Frequent High
43.9
43.0
Seasonally Flooded
-
-
Average
42.7
41.8
Typically Saturated
-
-
Frequent Low
41.7
40.8
Semipermanently Flooded
-
-
(aaa) Louisa
Lake
Frequent High
96.5
95.6
Seasonally Flooded
-
-
Average
95.4
94.5
Typically Saturated
-
-
Frequent Low
94.0
93.0
Semipermanently Flooded
-
-
(bbb) Lower Lake Louise
Volusia
Frequent High
31.8
30.8
Seasonally Flooded
-
-
Average
31.2
30.1
Typically Saturated
-
-
Frequent Low
29.7
28.7
Semipermanently Flooded
-
-
(ccc) Lucy
Lake
Frequent High
94.1
93.0
Seasonally Flooded
-
-
Average
92.5
91.4
Typically Saturated
-
-
Frequent Low
91.1
90.0
Semipermanently Flooded
-
-
(ddd) Magnolia
Clay
Frequent High
124.7
123.6
Seasonally Flooded
-
-
Average
124.2
123.1
Typically Saturated
-
-
Frequent Low
121.4
120.3
Semipermanently Flooded
-
-
(eee) Mall, Little Lake
Putnam
Frequent High
38.7
37.7
Seasonally Flooded
-
-
Average
36.8
35.8
Typically Saturated
-
-
Frequent Low
35.2
34.2
Semipermanently Flooded
-
-
(fff) Margaret
Putnam
Frequent High
35.2
34.2
Seasonally Flooded
-
-
Average
34.5
33.5
Typically Saturated
-
-
Frequent Low
32.5
31.5
Semipermanently Flooded
-
-
(ggg) Martha
Orange
Frequent High
53.5
52.5
Seasonally Flooded
-
-
Average
52.6
51.6
Typically Saturated
-
-
Frequent Low
51.2
50.2
Semipermanently Flooded
-
-
(hhh) Marvin
Putnam
Frequent High
38.6
37.6
Seasonally Flooded
-
-
Average
37.3
36.4
Typically Saturated
-
-
Frequent Low
36.3
35.3
Semipermanently Flooded
-
-
(iii) McGrady
Putnam
Frequent High
41.5
40.6
Seasonally Flooded
-
-
Average
39.9
38.9
Typically Saturated
-
-
Frequent Low
37.8
36.8
Semipermanently Flooded
-
-
(jjj) McKasel
Putnam
Frequent High
36.7
35.7
Seasonally Flooded
-
-
Average
35.5
34.6
Typically Saturated
-
-
Frequent Low
34.1
33.1
Semipermanently Flooded
-
-
(kkk) Melrose
Putnam
Frequent High
104.7
103.6
30
3
Average
104.2
103.1
180
1.7
Frequent Low
103.7
102.6
120
10
(lll) Mills
Seminole
Frequent High
42.5
41.1
Seasonally Flooded
-
-
Average
41.4
40.3
Typically Saturated
-
-
Frequent Low
39.9
38.9
Semipermanently Flooded
-
-
(mmm) Minneola
Lake
Frequent High
96.0
95.1
Seasonally Flooded
-
-
Average
95.3
94.4
Typically Saturated
-
-
Frequent Low
93.9
93.0
Semipermanently Flooded
-
-
(nnn) Monroe
Seminole and Volusia
Frequent High
2.8
1.9
-
30
2
Average
1.2
0.3
-
180
1.5
Frequent Low
0.5
-0.4
-
120
5
(ooo) Nettles/English
Putnam
Frequent High
44.3
43.3
Seasonally Flooded
-
-
Average
42.7
41.9
Typically Saturated
-
-
Frequent Low
41.7
40.7
Semipermanently Flooded
-
-
(ppp) Nicotoon
Marion
Frequent High
54.7
53.7
Seasonally Flooded
-
-
Average
53.3
52.3
Typically Saturated
-
-
Frequent Low
51.9
50.9
Semipermanently Flooded
-
-
(qqq) Norris
Lake
Frequent High
29.7
28.7
30
1.7
Frequent Low
27.7
26.7
120
7.6
-
-
(rrr) North Como Park
Putnam
Frequent High
41.3
40.4
Seasonally Flooded
-
-
Average
39.7
38.8
Typically Saturated
-
-
Frequent Low
38.5
37.6
Semipermanently Flooded
-
-
(sss) North Talmadge
Volusia
Frequent High
55.6
54.5
Seasonally Flooded
-
-
Average
54.4
53.3
Typically Saturated
-
-
Frequent Low
52.9
51.9
Semipermanently Flooded
-
-
(ttt) Omega
Putnam
Frequent High
57.4
56.3
Temporarily Flooded
-
-
Average
56.1
55.0
Typically Saturated
-
-
Frequent Low
54.0
52.9
Semipermanently Flooded
-
-
(uuu) Orio
Putnam
Frequent High
37.1
35.5
Seasonally Flooded
-
-
Average
35.6
34.6
Typically Saturated
-
-
Frequent Low
34.7
33.7
Semipermanently Flooded
-
-
(vvv) Pam
Putnam
Frequent High
39.3
38.2
Seasonally Flooded
-
-
Average
37.5
36.4
Typically Saturated
-
-
Frequent Low
36.1
35.0
Semipermanently Flooded
-
-
(www) Pearl
Orange
Frequent High
53.5
52.5
Seasonally Flooded
-
-
Average
52.6
51.6
Typically Saturated
-
-
Frequent Low
51.2
50.2
Semipermanently Flooded
-
-
(xxx) Pierson
Volusia
Frequent High
34.4
33.3
Seasonally Flooded
-
-
Average
33.8
32.8
Typically Saturated
-
-
Frequent Low
32.4
31.3
Semipermanently Flooded
-
-
(yyy) Pine Island
Lake
Frequent High
107.7
106.6
Seasonally Flooded
-
-
Average
106.8
105.7
Typically Saturated
-
-
Frequent Low
105.4
104.3
Semipermanently Flooded
-
-
(zzz) Prevatt
Orange
Frequent High
56.0
54.9
Seasonally Flooded
-
-
Average
53.0
52.0
Typically Saturated
-
-
Frequent Low
50.9
49.9
Semipermanently Flooded
-
-
(aaaa) Prior
Putnam
Frequent High
42.3
41.3
Seasonally Flooded
-
-
Average
40.0
39.0
Typically Saturated
-
-
Frequent Low
39.0
38.0
Semipermanently Flooded
-
-
(bbbb) Purdom
Volusia
Frequent High
36.3
35.3
30
2
Average
35.4
34.3
180
1.7
Frequent Low
34.4
33.3
120
5
(cccc) Sand
Putnam
Frequent High
40.9
39.4
Seasonally Flooded
-
-
Average
39.0
38.0
Typically Saturated
-
-
Frequent Low
36.6
35.7
Semipermanently Flooded
-
-
(dddd) Sand Hill
Clay
Frequent High
132.0
130.9
Seasonally Flooded
-
-
Average
131.6
130.6
Typically Saturated
-
-
Frequent Low
129.5
128.4
Semipermanently Flooded
-
-
(eeee) Savannah
Volusia
Frequent High
31.1
30.2
Seasonally Flooded
-
-
Average
29.5
28.4
Typically Saturated
-
-
Frequent Low
28.0
27.0
Semipermanently Flooded
-
-
(ffff) Scoggin
Volusia
Frequent High
35.0
34.0
Seasonally Flooded
-
-
Average
34.1
33.1
Typically Saturated
-
-
Frequent Low
32.7
31.7
Semipermanently Flooded
-
-
(gggg) Shaw
Volusia
Frequent High
36.7
35.7
-
30
3
Average
35.4
34.4
-
180
1.7
Frequent Low
33.7
32.7
-
120
3
(hhhh) Silver
Putnam
Frequent High
36.8
35.8
Seasonally Flooded
-
-
Average
35.1
34.1
Typically Saturated
-
-
Frequent Low
33.7
32.7
Semipermanently Flooded
-
-
(iiii) Smith
Marion
Frequent High
54.6
53.6
Temporarily Flooded
-
-
Average
51.4
50.4
Typically Saturated
-
-
Frequent Low
50.0
49.0
Semipermanently Flooded
-
-
(jjjj) South
Brevard
Frequent High
16.7
15.5
Temporarily Flooded
-
-
Average
15.3
14.0
Typically Saturated
-
-
Frequent Low
13.8
12.6
Semipermanently Flooded
-
-
(kkkk) South Como Park
Putnam
Frequent High
38.1
37.2
Seasonally Flooded
-
-
Average
36.7
35.8
Typically Saturated
-
-
Frequent Low
35.3
34.4
Semipermanently Flooded
-
-
(llll) Star
Putnam
Frequent High
77.5
76.5
Seasonally Flooded
-
-
Average
75.4
74.4
Typically Saturated
-
-
Frequent Low
74.0
73.0
Semipermanently Flooded
-
-
(mmmm) Stella
Putnam
Frequent High
39.4
38.4
Seasonally Flooded
-
-
Average
38.6
37.6
Typically Saturated
-
-
Frequent Low
37.2
36.1
Semipermanently Flooded
-
-
(nnnn) Sunset
Lake
Frequent High
85.9
84.9
Temporarily Flooded
-
-
Average
83.5
82.4
Typically Saturated
-
-
Frequent Low
81.0
79.9
Semipermanently Flooded
-
-
(oooo) Swan
Putnam
Frequent High
93.0
91.9
Temporarily Flooded
-
-
Average
90.3
89.2
Typically Saturated
-
-
(pppp) Sylvan
Seminole
Frequent High
40.4
39.5
Seasonally Flooded
-
-
Average
38.9
38.0
Typically Saturated
-
-
Frequent Low
37.5
36.5
Semipermanently Flooded
-
-
(qqqq) Tarhoe
Putnam
Frequent High
36.6
35.7
30
3
Average
35.1
34.2
180
1.7
Frequent Low
33.0
32.0
120
5
(rrrr) Three Island Lakes
Volusia
Frequent High
23.7
22.7
-
30
5
Frequent Low
19.4
18.4
-
120
10
(ssss) Trone
Putnam
Frequent High
37.1
36.2
-
30
3
Average
35.4
34.5
-
180
1.7
Frequent Low
32.8
31.9
-
120
5
(tttt) Trout
Volusia
Frequent High
23.3
22.3
Seasonally Flooded
-
-
Average
20.9
20.0
Typically Saturated
-
-
Frequent Low
17.7
16.8
Semipermanently Flooded
-
-
(uuuu) Tuscawilla
Alachua
Frequent High
77.6
76.4
Seasonally Flooded
-
-
Average
74.6
73.4
Typically Saturated
-
-
Frequent Low
73.2
72.0
Semipermanently Flooded
-
-
(vvvv) Upper Lake Louise
Volusia
Frequent High
35.3
34.4
Seasonally Flooded
-
-
Average
34.6
33.6
Typically Saturated
-
-
Frequent Low
33.2
32.2
Semipermanently Flooded
-
-
(wwww) Washington
Brevard
Frequent High
15.6
14.2
Seasonally Flooded
-
-
Average
14.2
12.8
Typically Saturated
-
-
Frequent Low
12.8
11.4
Semipermanently Flooded
-
-
(xxxx) Wauberg
Alachua
Frequent High
67.4
66.4
Seasonally Flooded
-
-
Average
67.1
66.1
Typically Saturated
-
-
Frequent Low
65.6
64.7
Semipermanently Flooded
-
-
(yyyy) Weir
Marion
Frequent High
57.2
56.2
Seasonally Flooded
-
-
Average
56.4
55.4
Typically Saturated
-
-
Frequent Low
54.9
53.9
Semipermanently Flooded
-
-
(zzzz) Winnemisett
Volusia
Frequent High
59.5
58.5
Seasonally Flooded
-
-
Average
57.8
56.8
Typically Saturated
-
-
Frequent Low
56.0
55.0
Semipermanently Flooded
-
-
(aaaaa) Winona
Volusia
Frequent High
36.1
35.1
Seasonally Flooded
-
-
Average
33.5
32.5
Typically Saturated
-
-
Frequent Low
32.0
31.0
Semipermanently Flooded
-
-
(5)
				The following minimum surface water levels are established as exceedance
				percentiles:
System Name
County
Minimum Level
Level
(ft NAVD)
Brooklyn
Clay
P25
111.5
P50
106.2
P75
98.6
Butler
Volusia
P50
20.1
Geneva
Bradford
P25
101.7
Clay
P50
98.3
P75
89.3
Lochloosa
Alachua
P50
56.5
The minimum P25, P50, and P75 levels for Lake Brooklyn are
				  based on the MFLs condition lake level time series (7/17/1957 - 12/31/2018),
				  effective 9/28/2021, which is incorporated by reference and available at
https://www.flrules.org/Gateway/reference.asp?No=Ref-13524
and upon request from the St. Johns River Water Management District, 4049 Reid
				  Street, Palatka, FL 32177-2529.
MFL status of Lake Brooklyn will be assessed by comparing the
				  minimum P25, P50, and P75 to the current P25, P50, and P75, respectively. The
				  current P25, P50, and P75 for Lake Brooklyn are calculated by updating the
				  current-pumping condition lake level time series (7/17/1957 - 12/31/2018) with
				  post-2018 observed data at SJRWMD gage 3360373. The current-pumping condition
				  lake level time series is incorporated by reference and available at
https://www.flrules.org/Gateway/reference.asp?No=Ref-13524
and upon request from the St. Johns River Water Management District, 4049 Reid
				  Street, Palatka, FL 32177-2529.
The minimum P50 level for Lake Butler is a long-term median
				  lake level based on the MFLs condition lake level time series (1949 - 2018),
				  effective September 30, 2020, which is incorporated by reference and available
				  at
https://www.flrules.org/Gateway/reference.asp?No=Ref-12168
and upon request from the St. Johns River Water Management District, 4049 Reid
				  Street, Palatka, FL 32177-2529.
MFL status of Lake Butler will be assessed by comparing the
				  minimum P50 to the current P50. The current P50 for Lake Butler is calculated
				  by updating the simulated historical lake level time series (1949 - 2018) with
				  post-2018 observed data at SJRWMD gage 03390378. The simulated historical lake
				  level time series is incorporated by reference and available at
https://www.flrules.org/Gateway/reference.asp?No=Ref-12168
and upon request from the St. Johns River Water Management District, 4049 Reid
				  Street, Palatka, FL 32177-2529.
The minimum P25, P50, and P75 levels for Lake Geneva are
				  based on the MFLs condition lake level time series (7/1/1957 - 12/31/2018),
				  effective 9/28/2021, which is incorporated by reference and available at
https://www.flrules.org/Gateway/reference.asp?No=Ref-13525
and upon request from the St. Johns River Water Management District, 4049 Reid
				  Street, Palatka, FL 32177-2529.
MFL status of Lake Geneva will be assessed by comparing the
				  minimum P25, P50, and P75 to the current P25, P50, and P75, respectively. The
				  current P25, P50, and P75 for Lake Geneva are calculated by updating the
				  current-pumping condition lake level time series (7/1/1957 - 12/31/2018) with
				  post-2018 observed data at SJRWMD gage 11590497. The current-pumping condition
				  lake level time series is incorporated by reference and available at
https://www.flrules.org/Gateway/reference.asp?No=Ref-13525
and upon request from the St. Johns River Water Management District, 4049 Reid
				  Street, Palatka, FL 32177-2529.
The minimum P50 level for Lochloosa Lake is a long-term
				  median lake level based on the MFLs condition lake level time series (1957 -
				  2015), effective 1-30-19, which is incorporated by reference and available at
https://www.flrules.org/Gateway/reference.asp?No=Ref-10225
and upon request from the St. Johns River Water Management District, 4049 Reid
				  Street, Palatka, FL 32177-2529.
MFL status of Lochloosa Lake will be assessed by comparing
				  the minimum P50 to the current P50. The current P50 for Lochloosa Lake is
				  calculated by updating the simulated historical lake level time series (1957 -
				  2015) with post-2015 observed data at SJRWMD gage 71481615. The simulated
				  historical lake level time series is incorporated by reference and available at
https://www.flrules.org/Gateway/reference.asp?No=Ref-10225
and upon request from the St. Johns River Water Management District, 4049 Reid
				  Street, Palatka, FL 32177-2529.
(6)
(a) The
				minimum flow for Alexander Springs in Lake County is 95.7 cubic feet per second
				(CFS).
(b) The minimum flow for
				Alexander Springs is a mean annual flow based on the adjusted flow times-series
				data (1983 - 2014) at USGS gage 00291896. This adjusted flow-time series data
				from 1983 to 2014, effective 6-29-17, is incorporated by reference and
				available at
http://www.flrules.org/Gateway/reference.asp?No=Ref-08325
,
				and upon request from the St. Johns River Water Management District, 4049 Reid
				Street, Palatka, FL 32177-2529.