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S-65 Dam Quick Facts

Location: Osceola, Florida
Coordinates: 27.803531, -81.197414
River: Kissimmee River (C-38)
Primary Purpose: Flood Risk Reduction
Type: Earth Other
Commissioned: 1964
Dam Height: 40 ft (12 m)
Dam Length: 520 ft (158 m)
Dam Capacity: 730,000 acre-ft (900,440 Ml)
Hazard Potential: Significant
Condition Assessment: Satisfactory
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S-65 Dam Map

S-65 Dam Information

S-65 Dam is an earth other dam located in Turkey Hammock, Osceola, Florida.

The dam, which is on the Kissimmee River (C-38), was primarily built for Flood Risk Reduction purposes, but also serves for Navigation benefits.

The dam was designed by and commissioned in 1964 and is currently owned by SFWMD.

S-65 Dam Structure

The S-65 Dam is approximately 520 feet (158 m) long, 40 feet (12 m) high and has a structural volume of 128,672 cubic yards (98,376 cubic metres).

S-65 Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 350,000 acre-ft (431,718 Ml) and maximum capacity of 730,000 acre-ft (900,440 Ml).

The surface area of the reservoir is 31,383 acres (12,700 ha) and the total catchment area is 0 square miles (0 square kilometres).

S-65 Dam Spillway

The dam spillway has a maximum discharge capacity of 11000 cubic feet per second (311 cubic metres per second).

S-65 Dam Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
S-65 Dam
Osceola, Florida
Height (ft)
40
Length (Ft)
520
Storage Volume (acre-ft)
730,000
Drainage Area (sq miles)
0
Hoover Dam
Clark County, Nevada
Height (ft)
730
Length (Ft)
1,244
Storage Volume (acre-ft)
30,237,000
Drainage Area (sq miles)
167,800
Grand Coulee Dam
Okanogan County, Washington
Height (ft)
550
Length (Ft)
5,673
Storage Volume (acre-ft)
9,562,0000
Drainage Area (sq miles)
74,100
Theodore Roosevelt Dam
Maricopa County, Arizona
Height (ft)
357
Length (Ft)
1,208
Storage Volume (acre-ft)
3,411,500
Drainage Area (sq miles)
5,736
Oroville Dam
Butte County, California
Height (ft)
235
Length (Ft)
6,920
Storage Volume (acre-ft)
3,540,000
Drainage Area (sq miles)
3,611
Glen Canyon Dam
Coconino County, Arizona
Height (ft)
216
Length (Ft)
1,565
Storage Volume (acre-ft)
29,875,000
Drainage Area (sq miles)
108,355

S-65 Dam Weather

Current Conditions at S-65 Dam

Parameter Value
Current Time 20:36
Sunrise 07:06
Sunset 17:30
Temperature (°F) 55
Feels Like (°F) 53
Cloud Coverage (%) 15
Pressure (inHg) 1022
Humidity (%) 54
Wind Speed (mph) 14
Rain (mm) 0

7-Day Forecast for S-65 Dam

Day Min Temp (°F) Max Temp (°F) Feels Like (°F) Pressure (inHg) Humidity (%) Wind Speed (mph) Wind Gust (mph) Wind Dir Precip Prob (%) Precip Volume (mm) Weather
Today 55 81 83 1017 66 19 31 SW 100 2 light rain
Thu 46 67 64 1027 47 15 29 NE 0 - clear sky
Fri 52 70 69 1028 62 16 26 ENE 20 0 light rain
Sat 65 77 74 1027 58 17 27 ENE 20 0 light rain
Sun 64 78 78 1021 57 14 24 ENE 20 0 light rain
Mon 67 79 79 1019 60 14 21 ENE 39 1 light rain
Tue 67 81 82 1019 57 10 23 NE 27 1 light rain
Wed 65 80 80 1019 59 11 21 E 100 2 light rain

S-65 Dam Frequently Asked Questions

In which state is the S-65 Dam?

S-65 Dam is in Florida.

In which county is the S-65 Dam?

S-65 Dam is in Osceola County.

How high is the S-65 Dam?

S-65 Dam is 40 feet high.

How long is the S-65 Dam?

S-65 Dam is 520 feet long.

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More Dams in Osceola County:

G111 Control Structure Dam
G113 Control Structure Dam
Rcid Levee D-6, D-6a Dam
S-58 Dam
S-60 Dam
S-63 Dam
S-65 Dam

Condition Assessment Classification

Satisfactory

No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.

Fair

No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum

Poor

A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.

Unsatisfactory

A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.

Not Rated

The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.

Not Available

Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Significant

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.

Low

Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner’s property.

Undetermined

Dams for which a downstream hazard potential has not been designated or is not provided.

Not Available

Dams for which the downstream hazard potential is restricted to approved government users.

Source: National Inventory of Dams

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