Olson/Mann Dam Reservoir Report | Iowa Dams & Reservoirs

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Reservoir Levels

Iowa

OLSON/MANN DAM

RESERVOIR LEVELS
Soil Dam Tr-Soldier River
May 8, 2025

45°F

Tonight

82°F

Friday

8mph

Windspeed

49%

Humidity

Nid_Height 52

Primary_Dam_Type Earth

Drainage_Area 0.31

Year_Completed 1959

Dam_Height 52

Hazard_Potential Low

River_Or_Stream TR-SOLDIER RIVER

Surface_Area 5.5

Nid_Storage 100

Dam_Length 488

Foundations Soil

Reservoir Levels

Iowa

Explore Interactive Map

OLSON/MANN DAM

Reservoir Levels • Weather • Hydrology

May 8, 2025

Nid_Height 52

Primary_Dam_Type Earth

Drainage_Area 0.31

Year_Completed 1959

Dam_Height 52

Hazard_Potential Low

River_Or_Stream TR-SOLDIER RIVER

Surface_Area 5.5

Nid_Storage 100

Dam_Length 488

Foundations Soil

Weather Forecast

Time Condition Temp (F) Snow (in) Rain (in) Humidity (%) Windspeed (mps) Wind Direction (°)
Time
Condition
Temp (F)
Snow (in)
Rain (in)
Humidity (%)
Windspeed (mps)
Wind Direction (°)

2025-05-09 02:00:00 clear sky 63.61
2025-05-09 05:00:00 clear sky 56.48
2025-05-09 08:00:00 clear sky 52.29
2025-05-09 11:00:00 clear sky 65.95
2025-05-09 14:00:00 clear sky 75.45
2025-05-09 17:00:00 clear sky 78.93
2025-05-09 20:00:00 clear sky 76.71
2025-05-09 23:00:00 clear sky 65.86
2025-05-10 02:00:00 scattered clouds 61.43
2025-05-10 05:00:00 broken clouds 57.99
2025-05-10 08:00:00 scattered clouds 58.37
2025-05-10 11:00:00 clear sky 68.94
2025-05-10 14:00:00 clear sky 77.18
2025-05-10 17:00:00 clear sky 81.09
2025-05-10 20:00:00 clear sky 78.33
2025-05-10 23:00:00 clear sky 67.55
2025-05-11 02:00:00 clear sky 65.34
2025-05-11 05:00:00 clear sky 61.47
2025-05-11 08:00:00 clear sky 60.39
2025-05-11 11:00:00 clear sky 71.37
2025-05-11 14:00:00 clear sky 78.78
2025-05-11 17:00:00 clear sky 80.73
2025-05-11 20:00:00 clear sky 76.32
2025-05-11 23:00:00 clear sky 67.59
2025-05-12 02:00:00 clear sky 63.75
2025-05-12 05:00:00 clear sky 59.61
2025-05-12 08:00:00 clear sky 58.1
2025-05-12 11:00:00 clear sky 68.5
2025-05-12 14:00:00 clear sky 75.2
2025-05-12 17:00:00 broken clouds 77.86
2025-05-12 20:00:00 scattered clouds 73.94
2025-05-12 23:00:00 scattered clouds 65.12
2025-05-13 02:00:00 scattered clouds 62.2
2025-05-13 05:00:00 scattered clouds 59.4
2025-05-13 08:00:00 few clouds 58.64
2025-05-13 11:00:00 clear sky 69.6
2025-05-13 14:00:00 clear sky 77.61
2025-05-13 17:00:00 clear sky 81
2025-05-13 20:00:00 clear sky 77.81
2025-05-13 23:00:00 clear sky 66.31

Nearby Streamflow Levels

TARKIO RIVER AT FAIRFAX MO 111cfs

NORTH FORK BIG NEMAHA RIVER AT HUMBOLDT 19cfs

BLACK VERMILLION R NR FRANKFORT 40cfs

STRANGER C NR POTTER 199cfs

DELAWARE R NR MUSCOTAH 59cfs

LITTLE NEMAHA RIVER AT AUBURN 40cfs

MISSOURI RIVER AT RULO 36000cfs

View more
Nearby Dams

Davis-Battle Cr. Watershed Site F-1

Davis-Battle Cr. Watershed Site H-3

Davis-Battle Cr. Watershed Site H-4-1

Woods Hollow Subwatershed Site 1-2875

Cleveland Dam

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Local Parks

Scharnberg County Park

Monson Lake State Park

Joseph R. Brown State Wayside

Lake Shetek State Park

Bruegmann Park

View more
Nearby Fishing

Pine lake Pond

Butler State Lake

Fish Feeder

Fort Riley

Alma City Lake

View more
Boat Launches

Monona County

US 34;US 275 Mills County

Main boat ramp

Lake 2

310th Street Woodbury County

I 29;US 275 Mills County

Mills County

Decatur

Plattsmouth Boat Ramp

Louisville Platte River Boat Ramp

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Nid_Height	52
Primary_Dam_Type	Earth
Drainage_Area	0.31
Year_Completed	1959
Dam_Height	52
Hazard_Potential	Low
River_Or_Stream	TR-SOLDIER RIVER
Surface_Area	5.5
Nid_Storage	100
Dam_Length	488
Foundations	Soil

TARKIO RIVER AT FAIRFAX MO	111cfs
NORTH FORK BIG NEMAHA RIVER AT HUMBOLDT	19cfs
BLACK VERMILLION R NR FRANKFORT	40cfs
STRANGER C NR POTTER	199cfs
DELAWARE R NR MUSCOTAH	59cfs
LITTLE NEMAHA RIVER AT AUBURN	40cfs
MISSOURI RIVER AT RULO	36000cfs

SNOFLO®

OLSON/MANN DAM

45°F

82°F

8mph

49%

OLSON/MANN DAM

Reservoir Levels • Weather • Hydrology

May 8, 2025

Weather Forecast

Nearby Streamflow Levels

Nearby Dams

Local Parks

Nearby Fishing

Boat Launches

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