Simmary of 1983-1984 Dry Season Hydrologic Conditions

SIMMARY OF 1983-1984 DRY SEASON HYDROLOGIC CONDITIONS

Prepared by Steve Lin Water Resources Division Resource Planning Department South Florida Water Management District West Palm Beach, Florida October 1984 ACKNOWLEDGMENTS

The production of this report was made possible by the support and assistance of the following:

Ellis Donsky, U. S. Geological Survey, Miami, Florida, for the supply of daily discharge and stage data of the Lower East Coast and Lake Okeechobee basins.

Howard George, U. S. Geological Survey, Orlando, Florida, for the supply of daily discharge, stage data of the Upper Kissimmee Basin.

Tom MacVicar and his staff, Data Management Division, for the supply of daily rainfall, discharge, stage data of the stations operated and maintained by the District

Dick Slyfield, Resource Operations Department, for the supply of structure operation information.

Special thanks are extended to the staff of the Water Resources Division for their efforts in the preparation, verification, and setting up the data on the data base. TABLE OF CONTENTS

Page

Acknowledgements ...... i

Table of Contents...... ii List of Tables...... iii

List of Figures...... iii

Summary ...... 1

Upper Kissimmee Lakes Basin...... 5

Lower Kissimmee River Basin...... 5

Lake Okeechobee ...... 6

Upper East Coast Area...... 6

Everglades Agricultural Areas ...... 7

Water Conservation Areas ...... 7

Lower East Coast...... 9

Lower West Coast...... 10 Fisheating Creek and C-41 Basin...... 11

Everglades National Park...... 11 LIST OF TABLES

IW N Number Page

1 Dry Season Rainfall of Nov. 1983-May 1984 in Inches...... 2 2 Dry Season Rainfall of Nov. 1983-May 1984 in Percent of Normal ...... 2 3 Pumpage from the Everglades Agricultural Areas...... 8 4 Irrigation Releases from Lake Okeechobee...... 8 5 Monthly Discharge to Everglades National Park and Shark River Slough (S-12, S-333)...... 12

LIST OF FIGURES

1 Raingages and Basin Boundary...... 13 2 Rainfall Nov. 1983 - May 1984 (Inches) ...... 14 3 Rainfall - Percent of Normal - Nov. 1983-May 1984...... 15 4 Rainfall in District Areas - Upper Kissimmee Lakes, Kissimmee River, Upper East Coast, Lake Okeechobee...... 16 5 Rainfall in Disrict Areas - Lower East Coast, Water Conservation Areas...... 17 6 Rainfall in District Areas - Everglades Agricultural Areas, Everglades National Park, Lower West Coast, Fisheating Creek Basin ...... 18 7 Discharge at Upper Kissimmee and Lower Kissimmee River Basin...... 19 8 Discharge at Lake Okeechobee - S-84, S-71, S-72, and S-77..... 20 9 Discharge at Lake Okeechobee - S-2, S-3, S-191, Fisheating Creek...... 21 Discharge at Water Conservation Areas S-5A, S-6, S-7, S-10.... 22 Discharge at Water Conservation Areas S-11, S-39, S-38, S-34.. 23 Discharge at Lower East Coast ...... 24 Discharge at S-8 and S-12...... 25 Discharge at Upper East Coast Areas...... 26 Discharge at Lower West Coast Areas...... 27 Daily Staae Hvdroarah~ - EAst ILAk Tohonekalian Daily Est ak ThI kligtage,ydogaps LaKe lonopeKaliga...... Daily Stage Hydrographs - Lake Kissimmee, Lake Okeechobee..... Daily Stage Hydrographs - Water Conservation Areas 1, 2A...... Daily Stage Hydrograph - Water Conservation Area 3A...... SUMMARY

The rainfall pattern for the dry season from November 1983 through May

1984 can be summarized as wet overall, but dry in January. For the South

Florida Water Management District basins (District) as a whole, the total dry

season rainfall was 22.96 inches, or 130% of normal. Tables 1 and 2 present

the monthly rainfall distribution over the District's basins in inches and

percent of normal, respectively.

The November 1983 rainfall was quite variable, ranging from about 50% of

normal in Water Conservation Area (WCA) 1 to almost 195% of normal in the

Lower West Coast. At the beginning of the dry season, the water level in Lake Okeechobee was a foot below regulation schedule, but was 1.33 feet and 600,000

acre-feet above the historical average. East Lake Tohopekaliga was about 0.8

feet below its regulation schedule. Lake Tohopekaliga, WCA-1, and WCA-3A were

at the top of their regulation schedules. WCA-2A was over 1.0 foot above its

drawdown schedule. With below normal rainfall in November, the water level in WCA-1 and WCA-3A declined slightly, and WCA-2A declined substantially.

The December 1983 rainfall in the District was above normal. Except for

Lake Okeechobee, the water levels in most of the major water storage areas

rose to or above regulation schedules.

The January 1984 rainfall was below normal in all basins of the District, ranging from only 6.3% of normal in WCA-3A to 59.6% of normal in the Upper

Kissimmee basins. Surface storage in the lakes and water conservation areas remained well above normal and close to their regulation schedules, except in Lake Okeechobee. The water level in Lake Okeechobee was only 0.5 feet from

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except in WCA-3A and Everglades National Park (ENP or Park) (Table 2). The water level in Lake Okeechobee was slightly below its regulation schedule.

All three water conservation areas and the lakes in the Upper Kissimmee basin were held essentially on schedule during this month.

March 1984 rainfall was above normal in most parts of the District except

for the Upper Kissimmee basin (Table 2). Early releases from Lake Okeechobee

during this dry season were made to avoid unwanted regulatory releases. In

spite of this action, the above normal rainfall during March caused the lake

stage to rise above its regulation schedule and forced lake releases to be

increased to the regulatory level through the Caloosahatchee River. Releases were also made through the Everglades Agricultural Areas (EAA) to WCA-3A and

the St. Lucie Canal. All lakes in the Upper Kissimmee basin maintained their declining schedule.

April 1984 rainfall was above normal in most parts of the District with the exception of the Lower West Coast, WCA-3A, and the Upper East Coast. The Lower East Coast rainfall was near normal. The heavy releases in March and

April were successful in bringing Lake Okeechobee's stage below its regulation schedule by the end of April, yet it still remained 2.0 feet over its historical average. Stages in all three water conservation areas declined during this month. All lakes in the Upper Kissimmee basin were held essentially at their declining schedule except East Lake Tohopekaliga which rose above its schedule during the middle of the month.

A 30-day experiment of releases from S-333 was started April 19, and the releases were made from WCA-3A to the Tamiami Canal and into the natural channel of Shark River Slough. This experimental program included a careful monitoring of surface and ground water measurements in the area south of Shark 3 River Slough. This experiment combined with a below normal rainfall period caused a decline in WCA-3A stages.

May 1984 rainfall, as usual, brought widely varying rainfall conditions.

The first three weeks of the month were as dry as in late April; however,

during the last week of May, the rainy season began with a heavy rainfall. As

a result, the western C-51 basin experienced severe flooding with flood waters overtopping the south bank of C-51 at Sucrose Grower's cane field.

The May 1984 rainfall was above normal in all parts of the District

(Table 2). The water level in the lakes and water conservation areas declined

and closely followed their regulation schedules during most of the month. The

heavy rains during the last week of May caused the Lake Okeechobee stage to

rise above schedule; similarly, all three water conservation areas rebounded

late in the month in response to heavy rainfall. All lakes in the Upper Kissimmee basin essentially maintained their declining schedules.

The 30-day experimental release from S-333 was terminated on May 19. The

canal and groundwater levels in the area south of Shark River Slough remained well below critical levels throughout the entire test period.

The experimental delivery schedule (in effect since June 9, 1983) to the ENP was continued in WCA-3A. This schedule involved fully opening the

westernmost 18 of the 24 S-12 gates. The water level in WCA-3A remained well

above historical average thoughout this dry season, but well below its regulation schedule.

The areal rainfall distribution of the District's basins for the 1983-84

dry season rainfall are shown in Figures 2 and 3. Detailed monthly rainfall

and discharge statistics are presented in Figures 4 through 15. Daily stage

hydrographs for the major water storage areas are presented in Figures 16 through 19. Upper Kissimmee Lakes Basin

The total dry season rainfall from November 1, 1983 through May 31, 1984 was 21.96 inches, or 116.9% of the 68-year historical average. Monthly rainfall was above normal except in January and March of 1984 (60% and 33% of normal, see Table 2 and Figure 4). The December rainfall of 5.35 inches was only 0.05 of an inch below its historical maximum of 5.40 inches (recorded in 1916).

At the beginning of the dry season (November 1, 1983), lake stages were slightly below their regulation schedules (see Figures 16-17); however, the stages reached their schedules during December 1983, and except for East Lake

Tohopekaliga, the water levels were held close to regulation throughout the dry season. East Lake Tohopekaliga rose well above its regulation stage during mid-April, but maximum regulatory releases brought it down close to its regulation schedule by the end of April.

The above normal rainfall (260% of normal) during December 1983 had not only caused the lake stages to rise above regulation, but also caused some shore erosion around low lying areas of Lake Alligator and Lake Kissimmee.

These problems were aggravated by adverse wind conditions during December 1983.

Lower Kissimmee River Basin

The total dry season rainfall was 22.43 inches, or 130.6% of the 68-year historical average. Rainfall was above normal in most months except November 1983 and February 1984.

The water levels in Lake Istokpoga were held close to regulation schedule with some regulatory releases. No operational problem was encountered. Lake Okeechobee

Direct rainfall over the lake during this dry season was 23.13 inches, or 142.6% of the 31-year historical average. Rainfall was above normal except during January 1984 (see Table 2 and Figure 4).

At the beginning of the dry season, the lake level was a foot below its regulation schedule; however, it still was 1.33 feet or 600,000 acre-feet

above average. The lake level changed slightly during November and December

1983 which is normal for the lake. Some irrigation releases were made from

the lake to the EAA. Lake levels remained below schedule but still above the historical average (see Figure 17).

In January 1984, the staff recommended to initiate moderate releases from

Lake Okeechobee through the St. Lucie and Caloosahatchee Rivers in order to avoid major regulatory releases later in the dry season. As a consequence,

the regulatory releases through the St. Lucie Canal during March and April were maintained between 500 and 1500 cfs instead of the Zone B requirements of 2500 cfs.

Upper East Coast Area

The total dry season rainfall was about 22.64 inches or 117.1% of the

69-year historical average. November 1983, and January and April 1984 were below normal while the rest of the months were above normal rainfall (Figure 4).

Water levels in all canals were maintained a foot or more above their optimum during December 1983 providing an ample water supply source for frost control during the cold snap on Christmas weekend. Citrus growers lowered the

District canals almost 4 feet at that time, but the water levels returned to their normal range the next day. However, this cold snap did cause substantial frost damage to the citrus industry in central Florida.

6 The below normal rainfall in April and the first three weeks of May caused the canal stages in St. Lucie County to drop several feet and remain below optimum until the last week of May. The heavy rains late in May provided for a full recovery of water levels in the canals. Everglades Agricultural Areas

The total dry season rainfall was 22.28 inches or 126.2% of the 54-year historical average. Heavy rainfall during the months of December 1983, March, April, and the last week of May 1984 did require some backpumping into the lake and considerable pumping into the water conservation areas. Table 3 presents monthly pumpage from the Everglades Agricultural Area.

Due to the above normal rainfall during most of this dry season (Figure 6), the required irrigation releases from Lake Okeechobee were very small except during May. During November 1983, and January and February 1984, rainfall was below normal and the irrigation releases were increased slightly.

No irrigation releases were required from Lake Okeechobee during March and

April. The dry conditions of the first three weeks in May caused a substantial irrigation demand from the lake. Irrigation releases from the lake are summarized in Table 4. Water Conservation Areas

Direct rainfall over the three water conservation areas were 19.52 to

24.35 inches, or 128 to 141% of the 21-year historical average. WCA-1 received slightly more rainfall than WCA-2A and WCA-3A (see Figure 5 and

Tables 2 and 3). The rainfall isohyetal map (see Figure 2) was based on long term rainfall stations and presents a better picture of the areal distribution of the rainfall pattern over the District basins.

At the beginning of the dry season, the water levels in the three water conservation areas were either above or near their regulation schedules. The 7 00 C1C1d r-, l Ll Od 011,, -INM rt CT N W-r ^ tD .-- 1 "-i

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after January 1 in response to different operational strategies (Figures 18, 19).

The water level of WCA-1 dropped very sharply from the annual maximum of

17.0 feet msl on November 1, 1983, to the annual minimum of 14.0 feet msl on April 30, 1984, and reached 11.0 feet msl on May 22, 1984, (see Figure 18).

Large releases were made through the West Palm Beach and Hillsboro canals to tidewater and some through S-10 (see Figure 10). Some irrigation releases

were made through S-5A(S) and S-5A(W) to EAA during the latter part of April and the early part of May.

In WCA-2A near maximum releases were made through S-11 (see Figure 11) in

an effort to follow the special drawdown schedule; however, the stage never reached the drawdown schedule.

In WCA-3A the experimental program of opening all structures at S-12,

except S-12D, has been continued since June 9, 1983. Large releases through

S-12 (see Figure 13) were made this dry season. The water level in WCA-3A

continued to decline well below schedule but remained well above average (see

Figure 19). Table 5 presents monthly discharges to Everglades National Park

and Shark River Slough via the S-12 structures and S-333. The purpose of this

experiment was to seek better water distribution to the Park and to reduce the

chance of abnormally high discharges during the dry season. In addition, flow

through the westernmost S-12 structures more closely approximate the natural

sheet flow conditions. Figures 10, 11, and 13 present the discharge conditions'in the water conservation areas during this dry season. Lower East Coast

The total dry season rainfall was about 32.73 inches, or 152.3% of the

68-year historical average. The area near Boynton Beach and Delray Beach 9 received a total rainfall of over 44 inches during this dry season (see Figure

2). Heavy rainfall over the Memorial Day weekend flooded streets, causing

traffic jams in most parts of the Lower East Coast. The flood waters in the western C-51 basin overtopped the canal's south bank and flooded thousands of acres of agricultural land.

The dry season is normally a growing season of agricultural products.

Canal stages in south Dade County were held 0.5 to 1.0 feet below optimum at coastal structures and from 1.5 to 2.5 feet at interior structures. The stages in the coastal areas became critically low in January and February

1984 due to below normal rainfall. Gravity deliveries were begun in January to south Dade County through the south Dade conveyance system and continued through February by opening S-151, S-337, S-335, S-173, and by syphoning through pump station S-331. The water levels in the coastal areas rose above their critical levels at the end of February and the gravity deliveries were terminated. Figure 12 presents the dry season discharges in the Lower East Coast basins.

Lower West Coast

The total dry season rainfall was about 21.47 inches, or 135.0% of the 56-year historical average. January and February rainfall was below normal, the rest of the months were above normal rainfall.

Regulatory releases from Lake Okeechobee via the Caloosahatchee River were small during the first four months of the dry season. Most of the discharges during that time were due to local runoff. On Feburary 14, 1984 a constant discharge of 2000 cfs from Lake Okeechobee through the Caloosahatchee

River was begun in order to minimize the possibility of major regulatory releases later in the year. These early releases of 2000 cfs were later increased to 3000 cfs and to 4500 cfs by the end of March, but reduced to 3500 cfs during April. Regulatory releases from Lake Okeechobee through the

Caloosahatchee River reached 8000 cfs at the end of May due to heavy rainfall in the last week of May.

Fisheating Creek and C-41 Basin

The total dry season rainfall for Fisheating Creek and the C-41A basin

was 21.92 inches, or 134.6% of the 52-year historical average. Except for

January 1984, monthly rainfall in the basins was above normal (see Figure 6).

The stream flow at Fisheating Creek was above average except during

January and February due to below normal rainfall. Everglades National Park

The total dry season rainfall was 18.85 inches, or 113.3% of the 43-year average. November and December 1983 rainfall was above normal but during

January and February 1984 rainfall was below normal, especially January which

was only 17% of normal. March, April, and May rainfall was slightly above normal.

Water deliveries to the Park were significantly above the minimum

delivery schedule, as shown in Table 5. Deliveries through the S-12

structures ranged from 144% to 2000% of the scheduled minimum delivery. This was because all S-12 structures, except S-12D, were opened full during the dry season. The water deliveries to Taylor Slough through S-332 were continued at the level specified in the interagency agreement between the COE, ENP, and the District. Total S-12 deliveries from November 1, 1983 through May 31, 1984 were 400,738 acre feet as compared to the minimum requirements of 129,400 acre feet.

The 30-day experimental releases from S-333 began on April 19. Stages at all critical locations in the area south of Shark River Slough were monitored throughout the entire test period. Table 5. Monthly Discharge to Everglades National Park and Shark River Slough (S-12, S-333)

Actual % of Northeast Shark Schedule Min. Del. River Slough Month A-F A-F Schedule (S-333) A-F

Nov. 1983 59,000 85,092 144.2 0

Dec. 1983 32,000 86,639 270.7 0

Jan. 1984 22,000 86,877 394.9 0

Feb. 1984 9,000 51,672 574.1 0 Mar. 1984 4,000 40,440 1,011.1 0

Apr. 1984 1,700 34,785 2,046.1 24,381 May 1984 1,700 15,233 896.1 39,684

Total 129,400 400,738 309.7 64,065 O

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NORMAL (90-110.%)

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S-T DRY (LESS THAN 75%)

R - NOV. 1983-MAY t- UPPER KISSIMMEE BASIN(1914) 0 gPPER EAST COAST(19 14) 0 i MRX.YR 25 63 15 83 70 31 29 MAX.YR

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FIGURE 4. RAINFALL IN DISTRICT AREAS 16 i OWER EAST COST( 1915) W TER CONS. RRER 1(1963 C

N69 82 40 47 83 70 42 68 MAX .YR 83 83 83 70 72 68 MRX. R

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MEAN MEAN MIN. MIN. MAX. MAX. CURRENT CURRENT

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FIGURE 5. RAINFALL IN DISTRICT AREAS EVERGLADES AGRICULTURAL RRER(1929) ] bOWER WEST COAST(1927 3 )

32 57 58 83 70 48 77 MAX. YR 0D MRX. R En

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En En

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FIGURE 6. RAINFALL IN DISTRICT AREAS 3-59 (1942) S-613-61 (1942)(19423 S-59 (1942) i

53 53 64 64 66 60 60 MAX .YR MAX .R

LL. LL

C) z LU

A MEAN MERN I Z M[N. MN. Y MAX. MRX. )K CURRENT CURRENT

80 82 81 81 72 72 MIN.YR 83 82 83 82 82 81 MIN YR D J FM R M N D J F M

S-65 (1930) S-65 E (1928) i

MRX .YR MHX .R

MEAN MEAN MIN. MIN. MAX. Mv CURRENT CURRENT

MIN.YR 81 81 82 82 81 81 77 MIN .YR ND J F M M MIN.YR NDJFMRM

FIGURE 7. DISCHARGE AT UPPER KISSIMMEE AND LOWER KISSIMMEE BASIN S-84 (1963) S-72 (1962)

69 69 79 83 70 83 MAX .YR YR MAv I%

-(3U i. I coo L C i // w L.30 C C 2 I (3 Lj o \L~ A MERN MEAN ZMIN. MIN. Y MRAX * CURRENT CURRENT ZJ A NE I- 1( I. v U P 9 81 81 82 82 81 81 MIN.YR 81 83 83 82 81 81 81 MIN. R NDJ F M M NDJ F M M

S-71 (1962) 5-77 (1938) a 65 77 79 83 83 83 79 MAX .YR 69 47 70 83 83 83 54 MAX .YR

I- c 0 w i w ul I 10 Q 0 a:0 U0O U CDO O ). a:(/) Zcio - art co0 0 (3 V 0 Z "I NE to 4L 0 0 z A MEAN C A MEAN Z MIN. €-n a: CLi1. Z MIN. (/cZ 0 Y MXRRENT v MAY U W CURRENT z r -W CURRENT NN C I 31E 3E 31E 0 0 i i 81 81 82 82 81 81 81 MIN.YR 83 77 77 73 65 57 79 MIN.YR NDJFMRM NDJ FMRM

FIGURE 8. DISCHARGE AT LAKE OKEECHOBEE 5-2 & HGS-4(1967) C FJSHERTING CREEK (1932) n

MRX.YR YR

MEAN M!N. MEAN MIN. MqX. CURRENT MqX. I CURRENT

81 77 77 83 70 72 72 MIN.YR b6 51 35 62 56 76 81 MIN.YR NDJFM R M NDJFMRM

S-3 & HGS-3(1957) S-191 (1972) i MRX .YR

A MEAN ZM!N. Y MAX. M CURRE

------bli .L-I HXF R? 7fl R 79 MTMl VD .- i -b .-. '. 55. 7,. ' Mof"* " o 14 / 81 /4 MIN. YR NOJ F M R M NDJ F M R M

FIGURE 9. DISCHARGE AT LAKE OKEECHOBEE S-5A & S-5A rSI ( 1957) S-6 (1957)

N 59 77 58 83 70 69 76 MAX.YR fR

0 i-. uJ Li w 0

Z U I Q NZo A MERN w Z MIN. 0 Y MARX. z. oC)v X CURRENT TR LU°, u I

82 76 79 79 83 MIN.YR 83 82 82 82 81 fR D J FMR NDJ FM

S-7 (1960) S10 (1960)

MAX .YR (R

MEAN AMEAN MIN. Z MIN. MAX. Y MAX. CURRENT m CURRED

82 66 82 82 77 77 83 MIN.YR 'R NDJFMR M

FIGURE 10. DISCHARGE AT WATER CONSERVATION AREAS o S-11 (i961J S-39 (1963)

I. p

4 'p

LU I uJ c

C (:

COO *

J - - - a3 MERN MIN. C MAX. CURRENT i fi* ENT z- ui

81 81 82 82 83 81 MIN .YR 83 74 66 66 82 .YR NDJ FM R D J FM R

S-38 (1962) S-34 (1957)

MAX .YR MRX

MEAN MEAN MIN. MIN. MAX. MAX. CURRENT NT

81 83 75 73 72 65 82 MIN.YR 83 83 82 82 81 78 92 NDJ F M R M N D J F M R M

FIGURE 11. DISCHARGE AT WATER CONSERVATION AREAS 23 S-18C (1968) S-46 (1959)

MRX .R

A MEAN Z MN.

m CURRENT NT

81 81 82 82 82 81 82 MIN.YR 80 81 82 81 81 YR NDJFM RM NDJ FM

oTRMIAMIC) CRNRL (1963) MIAMJ CANAL NW 36TH ST.(1959)

69 69 83 83 83 83 69 MRX.YR YR 0 wi m

I- U LUw 0 O ua

uiO

0 0 0 Z

(I) M A MERN ZMIN. Y MARX. m CURRENT '-IZ( N W

74 70 71 74 75 77 81 MIN. YR 80 81 81 82 62 81 67 MI (R NDJ F M R M NDJ F M M

FIGURE 12. DISCHARGE AT LOWER EAST COAST STRUCTURE LOCATION MAP

S-8 (1962) S-12( 1962)

MRX.YR Y'R

A MEAN MEAN Z HIN. MIN. Y MAX. MAX. W CURRENT CURRI

67 83 68 82 82 73 83 MIN.YR YR NDJFMRM

FIGURE 13. DISCHARGE AT S-8 AND S-12 S-97 (1964) 5-99 (1964)

69 77 66 83 70 82 76 MRX.YR MRX.

LI-

uo I CE0,

LJV0e OQ . I1 z)0

C a MEAN ZMIN. Y MAX. Wc W CURRENT ZI- I

74 75 82 76 76 79 83 MIN.YR 72 81 71 77 81 81 83 MIN .R NDJ F MRM NDJ FMM I

5-80 ST.L UCIE LOCK(1952)

MAX .YR

MEAN MIN. MAX. CURRENT

64 64 65 63 65 64 76 MIN.YR NDJFMRM

FIGURE 14. DISCHARGE AT UPPER EAST COAST AREAS 26 S-79 (1966) GOLDEN GATE CANAL (1964) 0 0

MAX.YR un\r rf" I'AX- . rR

MERN MEAN MIN. MIN. MAX. MAX. CURRENT CURRENT

/I b1 dZ 75 74 71 73 MIN.YR 77 76 82 82 82 77 71 MIN IR NDJF MM NOJF M R M

FIGURE 15. DISCHARGE AT LOWER WEST COAST AREAS NOV DEC JAN FEB MAR APR MAY 1984 MONTH END 57.25 58.16 57.87 57.91 57.12 55.93 54.37 MONTH END MEAN 56.89 56.61 56.30 56.14 56.11 55.54 54.91 DEVIATION +0.36 +1.55 +1.57 +1.77 +1.01 +0.39 -0.54

I K(F" TAI r"FCKf fl+0

NOV DEC JAN FEB MAIR FPR MAY 1984 MONTH END 54.85 54.99 54.91 54.83 54.13 53.00 51.44 MONTH END MEAN 54.00 53.82 53.42 53.36 52.69 52.16 52.45 DEVIATION +0.85 +1.17 +1.49 +1.47 +1.44 +0.84 -1.01

FIGURE 16. DAILY STAGE HYDROGRAPHS LAKE KISSIMMEE

NOV DEC JAN FEB MAR APR MAY 1984 MONTH END 52.42 52.69 52.45 51.46 51.16 49.92 48.46 MONTH END MEAN 51.19 50.81 50.54 50.36 DEVIATION 50.11 49.67 49.17 +1.23 +1.88 +1.91 +1.10 +1.05 +0.25 -0.71

NOV DEC JAN FEB MAR APR MAY 1984 MONTH END 16.37 16.61 16.62 16.55 16.45 15.80 15.76 MONTH END MEAN 15.01 14.83 14.67 14.56 14.32 13.76 13.41 DEVIATION +1.36 +1.78 +1.95 +1.99 +2.13 +2.04 +2.35

FIGURE 17. DAILY STAGE HYDROGRAPHS WATER CONSERVATION AREA 1

ar 'YtZ:

-- w~y~ O2 111* 77mI I----- amml.

ml " i-* c NOV DEC JAN FEB MAR APR MAY 1984 MONTH END 16.72 17.10 16.05 15.24 15.28 12.94 16.06 MONTH END MEAN 16.34 16.11 15.88 15.57 14.94 13.96 14.15 DEVIATION +0.38 +0.99 +0.17 -0.33 +0.34 -1.02 +1.91

NOV DEC JAN FEB MAR APR MAY 1984 MONTH END 11.80 11.86 11.69 11.45 11.74 11.71 11.87 MONTH END MEAN 13.39 13.16 13.09 13.04 12.71 12.22 12.03 DEVIATION -1.59 -1.30 -1.40 -1.59 -0.97 -0.51 -0.16

FIGURE. 18. DAILY STAGE HYDROGRAPHS 30 NOV DEC JAN FEB MPI APR MAY 1984 MONTH END 10.22 10.18 9.78 9.30 9.40 9.24 9.22 MONTH END MEAN 9.79 9.49 9.12 8.94 8.66 8.06 8.20 DEVIATION +0.43 +0.69 +0.66 +0.36 +0.74 +1.18 +1.02

FIGURE 19. DAILY STAGE HYDROGRAPH LAKE KISSIMMEE

NOV DEC JAN FEB MAR APR MAY 1984 MONTH END 52.42 52.69 52.45 51.46 51.16 49.92 48.46 MONTH END MEAN 51.19 50.81 50.54 50.36 50.11 49.67 49.17 DEVIATION +1.23 +1.88 +1.91 +1.10 +1.05 +0.25 -0.71

OKEECHOBEE

NOV DEC JAN FEB MAR APR MAY 1984 MONTH END 16.37 16.61 16.62 16.55 16.45 15.80 15.76 MONTH END MEAN 15.01 14.83 14.67 14.56 14.32 13.76 13.41 DEVIATION +1.36 +1.78 +1.95 +1.99 +2.13 +2.04 +2.35

FIGURE 17. DAILY STAGE HYDROGRAPHS