Dams in Woodbury County, Iowa
311Total Dams
11High Hazard
22Significant
Dam Safety in Woodbury County, Iowa
Woodbury County has 311 dams tracked in the National Inventory of Dams. Of these, 11 are classified as high hazard — meaning failure would probably cause loss of human life. Another 22 carry a significant hazard classification. Currently, 4 dams have a condition assessment of poor or unsatisfactory.
The average dam in Woodbury County is 55 years old. The most common purpose is fire protection, stock, or small fish pond. The tallest dam is Bacon Creek Watershed Site A-3 at 69 ft.
Explore more: Oldest dams in Iowa · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| Bacon Creek Watershed Site A-3 | High | Satisfactory | 69 | Flood Risk Reduction | 1978 |
| Smokey Hollow Subwatershed Site 4 | High | Poor | 64 | Flood Risk Reduction | 1985 |
| Smokey Hollow Subwatershed Site 1 | High | Satisfactory | 59 | Flood Risk Reduction | 1986 |
| Smokey Hollow Subwatershed Site 3 | High | Satisfactory | 58 | Flood Risk Reduction | 1986 |
| Bacon Creek Watershed Site A-2-4 | High | Satisfactory | 51 | Flood Risk Reduction | 1979 |
| Bacon Creek Watershed Site A-3-1 | High | Satisfactory | 50 | Flood Risk Reduction | 1978 |
| Smokey Hollow Subwatershed Site 2 | High | Fair | 49 | Flood Risk Reduction | 1986 |
| Bacon Creek Watershed Site C-1 | High | Satisfactory | 41 | Flood Risk Reduction | 1976 |
| Bacon Creek Watershed Site A-1-1 | High | Fair | 36 | Flood Risk Reduction | 1978 |
| Glen Ellen Subwatershed Site 3-2 | High | Fair | 32 | Fire Protection, Stock, Or Small Fish Pond | 1963 |
| Glen Ellen Subwatershed Site 3-1 | High | Satisfactory | 29 | Fire Protection, Stock, Or Small Fish Pond | 1963 |
| Bacon Creek Watershed Site H-2-1 | Significant | Satisfactory | 59 | Flood Risk Reduction | 1981 |
| Bacon Creek Watershed Site A-2-1 | Significant | Poor | 55 | Flood Risk Reduction | 1978 |
| Bacon Creek Watershed Site H-3-1 | Significant | Satisfactory | 55 | Flood Risk Reduction | 1984 |
| Bacon Creek Watershed Site H-1 | Significant | Satisfactory | 54 | Flood Risk Reduction | 1984 |
| Bacon Creek Watershed Site J-3 | Significant | Satisfactory | 53 | Flood Risk Reduction | 1989 |
| Bacon Creek Watershed Site A-2-2 | Significant | Fair | 51 | Flood Risk Reduction | 1978 |
| Bacon Creek Watershed Site H-2-2 | Significant | Satisfactory | 51 | Flood Risk Reduction | 1981 |
| Bacon Creek Watershed Site A-2-3 | Significant | Poor | 47 | Flood Risk Reduction | 1978 |
| Bacon Creek Watershed Site J-1 | Significant | Satisfactory | 46 | Flood Risk Reduction | 1984 |
| Bacon Creek Watershed Site H-3-2 | Significant | Satisfactory | 46 | Flood Risk Reduction | 1984 |
| Woodbury County Roadgrade Dam 36-86-42 | Significant | Satisfactory | 42 | Other | 1990 |
| Little Whiskey Subwatershed Site M-2 | Significant | Satisfactory | 42 | Fire Protection, Stock, Or Small Fish Pond | 1990 |
| Bacon Creek Watershed Site H-1-2 | Significant | Not Rated | 40 | Flood Risk Reduction | 1981 |
| Bacon Creek Watershed Site H-1-1 | Significant | Fair | 40 | Flood Risk Reduction | 1981 |
| Bacon Creek Watershed Site H-1-3 | Significant | Satisfactory | 40 | Fire Protection, Stock, Or Small Fish Pond | 1981 |
| Big Whiskey 1 Subwatershed Site 3-1 | Significant | Fair | 38 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Bacon Creek Watershed Site A-2-6 | Significant | Not Rated | 35 | Flood Risk Reduction | 1978 |
| Smith Dam | Significant | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Iowa Noname60 | Significant | Not Rated | 29 | Recreation | 1964 |
| Anthon Subwatershed 1-2261 | Significant | Fair | 28 | Other | 1954 |
| Glen Ellen Subwatershed Site 2-2 | Significant | Fair | 25 | Fire Protection, Stock, Or Small Fish Pond | 1963 |
| Bacon Creek Watershed Site J-5 | Significant | Poor | 23 | Flood Risk Reduction | 1984 |
| Bacon Creek Watershed Site A-2 | Low | Not Rated | 64 | Flood Risk Reduction | 1978 |
| Bacon Creek Watershed Site A-1 | Low | Not Rated | 58 | Flood Risk Reduction | 1978 |
| Little Egypt Subwatershed 4-2772 | Low | Not Rated | 58 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Lum Hollow Subwatershed M-3847 | Low | Not Rated | 55 | Other | 1959 |
| West Fork #3 Subwtrshd Sta 37+14 #9 | Low | Not Rated | 55 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Davis Subwatershed 7-3615 | Low | Not Rated | 54 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Parnell Creek Subwatershed Site 8-1 | Low | Not Rated | 54 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Davis Subwatershed 19-2044 | Low | Not Rated | 52 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Sunrise Subwatershed Site 6a-1 | Low | Not Rated | 52 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Windy Hill Subwatershed Site 5-3 | Low | Not Rated | 52 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Walling Subwatershed Sta 57+84 #1b | Low | Not Rated | 51 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Neustrom Subwatershed Site 9-3 | Low | Not Rated | 50 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Bacon Creek Watershed Site J-2 | Low | Not Rated | 50 | Flood Risk Reduction | 1988 |
| Walling Subwatershed Sta 55+40 #1 | Low | Not Rated | 50 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Parnell Creek Subwatershed Site 8-2 | Low | Not Rated | 49 | Fire Protection, Stock, Or Small Fish Pond | 1969 |
| Neustrom Subwatershed Site M-4 | Low | Not Rated | 48 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Walling Subwatershed Sta 42+05 #4 | Low | Not Rated | 48 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Walling Subwatershed Sta 77+50 #1 | Low | Not Rated | 48 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Davis Subwatershed M-3398 | Low | Not Rated | 47 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Lum Hollow Subwatershed 9-3544 | Low | Not Rated | 47 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Neustrom Subwatershed Site 13-1 | Low | Not Rated | 47 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Big Coon Subwatershed Site 2-10a | Low | Not Rated | 47 | Fire Protection, Stock, Or Small Fish Pond | 1999 |
| Sunrise Subwatershed Site 6-1 | Low | Not Rated | 47 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Windy Hill Subwatershed Site 5b-1 | Low | Not Rated | 47 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Camp Creek Subwatershed Site M-2a | Low | Not Rated | 46 | Fire Protection, Stock, Or Small Fish Pond | 1989 |
| Bacon Creek Watershed Site L-3 | Low | Not Rated | 46 | Flood Risk Reduction | 1976 |
| Little Egypt Subwatershed 9-2670 | Low | Not Rated | 46 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Heisler Creek Subwtrshd Sta 39+84 #3 | Low | Not Rated | 46 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Weis Dam | Low | Not Rated | 45 | Fire Protection, Stock, Or Small Fish Pond | 1976 |
| Willow Creek Subwatershed Site M-1 | Low | Not Rated | 45 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Big Coon Subwatershed Site 2-9a | Low | Not Rated | 45 | Fire Protection, Stock, Or Small Fish Pond | 1999 |
| Dutch Hollow Subwatershed Site 1-8 | Low | Not Rated | 45 | Fire Protection, Stock, Or Small Fish Pond | 1994 |
| Washburn Subwatershed Sta 35+40 Gul.1 | Low | Not Rated | 45 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| West Fork #3 Subwtrshd Sta 8+15 #6 | Low | Not Rated | 45 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Camp Creek Subwatershed Site M-4 | Low | Not Rated | 44 | Fire Protection, Stock, Or Small Fish Pond | 1989 |
| Lum Hollow Subwatershed M-22453 | Low | Not Rated | 44 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Woodbury County Roadgrade Dam 18-87-44 | Low | Not Rated | 44 | Other | 1988 |
| Mc Donald Subwatershed 4-2557 | Low | Not Rated | 44 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Parnell Creek Subwatershed Site 9-1 | Low | Not Rated | 44 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Weber Creek Subwatershed Site M-11532 | Low | Not Rated | 44 | Fire Protection, Stock, Or Small Fish Pond | 1956 |
| Little Egypt Subwatershed 5-3052 | Low | Not Rated | 44 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Jett Subwatershed Site M-5 | Low | Not Rated | 43 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Lum Hollow Subwatershed 6-5495 | Low | Not Rated | 43 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Parnell Creek Subwatershed Site 15-1 | Low | Not Rated | 43 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Swanger Dam | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1970 |
| Dutch Hollow Subwatershed Site M-3 | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1984 |
| Weber Creek Subwatershed Site 2-3225 | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Dickman Subwatershed Site M-2 | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Dutch Hollow Subwatershed Site 4-1 | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1984 |
| Zellmer Subwatershed Site J-1a | Low | Not Rated | 42 | Flood Risk Reduction | 2002 |
| Parnell Creek Subwatershed Site M-3 | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Windy Hill Subwatershed Site 3-2 | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Big Coon Subwatershed Site D-2-1 | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1999 |
| Zellmer Subwtrshd Sta 31+70 #m | Low | Not Rated | 42 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Jett Subwatershed Site M-4 | Low | Not Rated | 41 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Cord Subwatershed M-7234 | Low | Not Rated | 41 | Fire Protection, Stock, Or Small Fish Pond | 1957 |
| Dutch Hollow Subwatershed Site 1a-1 | Low | Not Rated | 41 | Fire Protection, Stock, Or Small Fish Pond | 1991 |
| Big Coon Subwatershed Site 3-3 | Low | Not Rated | 41 | Fire Protection, Stock, Or Small Fish Pond | 1999 |
| West Wolf Creek Subwatershed Site 35 | Low | Not Rated | 41 | Fire Protection, Stock, Or Small Fish Pond | 1997 |
| Weber Creek Subwatershed Site 5-4460 | Low | Not Rated | 41 | Fire Protection, Stock, Or Small Fish Pond | 1956 |
| Foix Dam | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1992 |
| Lum Hollow Subwatershed 9-5186 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Little Beaver Subwatershed M-16730 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1957 |
| Neustrom Subwatershed Site 19-3 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Camp Creek Subwatershed Site 1-2 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1992 |
| West Wolf Creek Subwatershed Site 13 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1990 |
| College Corner Subwatershed Site 4-5 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Dutch Hollow Subwatershed Site 1-2 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1989 |
| Heisler Subwatershed Site 2-1 | Low | Not Rated | 40 | Flood Risk Reduction | 2004 |
| Wolf Creek Subwatershed Site 5a-1 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Walling Subwatershed Sta 99+70 #1 | Low | Not Rated | 40 | Other | 1953 |
| Weber Creek Subwatershed Site M-17052 | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1956 |
| Heisler Creek Subwtrshd Sta 29+80 #3d | Low | Not Rated | 40 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Clark Dam | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Neustrom Subwatershed Site 17-2 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Neustrom Subwatershed Site M-5 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Lum Hollow Subwatershed M-6199 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Neustrom Subwatershed Site 13-2 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Willow Creek Subwatershed Site 3-1 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Mud Creek Subwatershed Site 13b-1 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Bacon Creek Watershed Site K-1 | Low | Not Rated | 39 | Flood Risk Reduction | 1976 |
| Zellmer Subwtrshd #m 106+26 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Windy Hill Subwatershed Site 2-1 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Wolf Creek Subwatershed Site 4-4 | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1991 |
| Little Egypt Subwatershed Sta 125+21 #m | Low | Not Rated | 39 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Brauninger Dam | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1996 |
| Larson Dam | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1998 |
| Maxwell Dam | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Uhl Dam | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1969 |
| Thomsen Dam | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Camp Creek Subwatershed Site M-6a | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1998 |
| Lum Hollow Subwatershed M-27785 | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Theobold Subwatershed 6975 | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1948 |
| Little Beaver Subwatershed M-10001 | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1957 |
| Willow Creek Subwatershed Site M-2 | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Dickman Subwatershed Site 3-1 | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Woodbury County Road Dam 8-87-44 | Low | Not Rated | 38 | Grade Stabilization | 2001 |
| Woodbury County Roadgrade Dam 30-88-43 | Low | Not Rated | 38 | Other | 1999 |
| Wenger Subwatershed Sta 16+00 #5 | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Little Egypt Subwatershed Sta 62+38 #m | Low | Not Rated | 38 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Neustrom Subwatershed Site 11-2 | Low | Not Rated | 37 | Fire Protection, Stock, Or Small Fish Pond | 1977 |
| Camp Creek Subwatershed Site 10-1 | Low | Not Rated | 37 | Fire Protection, Stock, Or Small Fish Pond | 1998 |
| Big Whiskey Subwatershed Site 6-2 | Low | Not Rated | 37 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Mud Creek Subwatershed Site 13-1 | Low | Not Rated | 37 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Mud Creek Subwatershed Site 14-1 | Low | Not Rated | 37 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Little Whiskey Subwatershed Site M-1 | Low | Not Rated | 37 | Other | 1984 |
| Parnell Creek Subwatershed Site M-5 | Low | Not Rated | 37 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Davis Subwatershed M-7920 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Davis Subwatershed 7-1580 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Davis Subwatershed M-10843 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Little Beaver Subwatershed 5b-5000 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1957 |
| Lum Hollow Subwatershed M-17850 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Cord Subwatershed M-5571 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1957 |
| Little Beaver Subwatershed 5-8154 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1957 |
| Parnell Creek Subwatershed Site 5-1 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1969 |
| Big Coon Subwatershed Site 3a-4 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1999 |
| Wenger Subwatershed Sta 43+88 #m | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Jett Subwatershed Site 16-1 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Ralston Subwatershed Site 1-2 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1969 |
| Little Whiskey Subwatershed Site 16-2 | Low | Not Rated | 36 | Flood Risk Reduction | 2001 |
| Windy Hill Subwatershed Site 5-1 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Little Egypt Subwatershed Sta 29+82 #m | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| West Fork One Subwatershed Site 4-4300 | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| West Fork #3 Subwtrshd Sta 25+20 #9a | Low | Not Rated | 36 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Davis Subwatershed M-18560 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Lum Hollow Subwatershed 9c-3295 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| West Wolf Creek Subwatershed Site 12l | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1990 |
| Mc Donald Subwatershed Site 1 | Low | Not Rated | 35 | Recreation | 1985 |
| Dutch Hollow Subwatershed Site 1-3 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1991 |
| Gothier No.2 Subwatershed M-10840 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Parnell Creek Subwatershed Site 15-2 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Wolf Creek Subwatershed Site 3-2 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Walling Subwatershed Sta 20+86 #1b | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Walling Subwatershed Sta 18+02 #5 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Weber Creek Subwatershed Site M-15543 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1956 |
| Little Egypt Subwatershed 5-4730 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| West Fork #3 Subwtrshd Sta 52+20 #9 | Low | Not Rated | 35 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Davis Subwatershed M-14077 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Davis Subwatershed 5-1620 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Jett Subwatershed Site M-2 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Little Beaver Subwatershed 2-15127 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1957 |
| Miller Subwatershed 3-a-1500 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Willow Creek Subwatershed Site 10-3 | Low | Satisfactory | 34 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Dickman Subwatershed Site M-4 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Parnell Creek Subwatershed Site 21-1 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Heisler Creek Subwtrshd Sta 46+80 #3d | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Bitter Creek Subwatershed Site E-2 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1996 |
| Windy Hill Subwatershed Site 3a-1 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Windy Hill Subwatershed Site 5-4 | Low | Not Rated | 34 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Cresswell Dam | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1954 |
| Jett Subwatershed Site 2-1 | Low | Not Rated | 33 | Flood Risk Reduction | 2002 |
| Davis Subwatershed 7-6044 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Weber Creek Subwatershed Site M-5276 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Neustrom Subwatershed Site M-6 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| West Wolf Creek Subwatershed Site 26 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1995 |
| College Corner Subwatershed Site 3-1 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Miller Subwatershed 3-2975 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Mud Creek Subwatershed Site 8-1 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Dutch Hollow Subwatershed Site M-4 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1984 |
| Big Coon Subwatershed Site 6h-2 | Low | Not Rated | 33 | Flood Risk Reduction | 1999 |
| Bacon Creek Watershed Site F-1 | Low | Not Rated | 33 | Flood Risk Reduction | 1981 |
| Mc Donald Subwatershed Site 5-2290 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Mc Larty-edwards Subwtrshd #9 19+77 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Parnell Creek Subwatershed Site 20-2 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Bacon Creek Watershed Site H-2 | Low | Not Rated | 33 | Flood Risk Reduction | 1984 |
| Windy Hill Subwatershed Site 2-2 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Mc Larty-edwards Subwtrshd Sta 65+93 #m | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Windy Hill Subwatershed Site 3d-2 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Mc Larty-edwards Subwtrshd Sta 20+00 #1 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Wolf Creek Subwatershed Site 3-1 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1972 |
| Arlington Subwtrshd Sta 29+60 #6 | Low | Not Rated | 33 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Iowa Noname80 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Creswell Dam | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Woodbury County Roadgrade Dam 5-87-44 | Low | Not Rated | 32 | Other | 1991 |
| Mosier/bandy Dam | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1962 |
| Miller Subwatershed Site 4-3375 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Jett Subwatershed Site M-1 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Washburn Subwatershed Sta28+00 Gully3 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Neustrom Subwatershed Site 11-1 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1977 |
| Jett Subwatershed Site M-6 | Low | Not Rated | 32 | 2003 | |
| Mud Creek Subwatershed Site 6-1 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Ls Miller 4-3375 | Low | 32 | Grade Stabilization | 1960 | |
| Sunrise Subwatershed Site 7-1 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | |
| Wenger Subwatershed #m Sta 25+50 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Walling Subwatershed Sta 23+00 #1h | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Walling Subwatershed Sta 18+50 #1j | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Walling Subwatershed Sta 78+96 #1b | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Walling Subwatershed Sta 38+00 #1b | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Weber Creek Subwatershed Site M-13551 | Low | Not Rated | 32 | Fire Protection, Stock, Or Small Fish Pond | 1956 |
| Wise Dam | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Sulsberger Dam | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Lum Hollow Subwatershed 9-7697 | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Lum Hollow Subwatershed M-8552 | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Weber Creek Subwatershed Site 3-4287 | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| West Wolf Creek Subwatershed Site 30a | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1995 |
| Wolf Creek Subwatershed Site 5-2 | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Parnell Creek Subwatershed Site 21-2 | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Walling Subwatershed Sta 19+70 #4 | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Arlington Subwtrshd Sta 27+02 #8 | Low | Not Rated | 31 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Peterson Dam | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| West Wolf Creek Subwatershed Site 11 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1991 |
| Mud Creek Subwatershed Site 8-2 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Willow Creek Subwatershed Site M-3 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Wenger Subwatershed M 130+73 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Neustrom Subwatershed Site M-1 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Parnell Creek Subwatershed Site M-6 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Wolf Creek Subwatershed Site M-2 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Mc Larty-edwards Subwtrshd Sta 35+50 #1 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Zellmer Subwtrshd Sta 54+60 #b1 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| West Fork One Subwatershed Site 1-5000 | Low | Not Rated | 30 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Wahlberg Dam | Low | Not Rated | 29 | Fire Protection, Stock, Or Small Fish Pond | 1977 |
| Weber Creek Subwatershed Site M-9000 | Low | Not Rated | 29 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| College Corner Subwatershed Site 4-3 | Low | Not Rated | 29 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Wolf Creek Subwatershed Site M-3 | Low | Not Rated | 29 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Arlington Subwatershed Sta 51+00 #6 | Low | Not Rated | 29 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| West Fork One Subwatershed Site 4-4050 | Low | Not Rated | 29 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| West Fork One Subwatershed Site 2-10110 | Low | Not Rated | 29 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Herbold Dam | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1995 |
| Tordoff Dam | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1995 |
| Oberreuter Dam | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1973 |
| Ludvigson Dam | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1975 |
| Cord Subwatershed M-10464 | Low | Not Rated | 28 | Other | 1957 |
| Dutch Hollow Subwatershed Site M-2 | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1984 |
| West Wolf Creek Subwatershed Site 34 | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1997 |
| Weber Creek Subwatershed Site 9-1900 | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Anthon Subwatershed M-4001 | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1954 |
| College Corner Subwatershed Site 4-2 | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Wenger Subwatershed Sta 32+00 #5 | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Walling Subwatershed Sta 31+73 #1 | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Walling Subwatershed Sta 19+11 #1k | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1953 |
| Weber Creek Subwatershed Site M-18555 | Low | Not Rated | 28 | Fire Protection, Stock, Or Small Fish Pond | 1956 |
| Diede Dam | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1996 |
| Camp Creek Subwatershed Site M-8 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1998 |
| Little Beaver Subwatershed 2-13001 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1957 |
| West Wolf Creek Subwatershed Site 44-a | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1997 |
| Weber Creek Subwatershed Site M-11136 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Lum Hollow Subwatershed 12-10865 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Lum Hollow Subwatershed 7-2982 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Mc Larty-edwards Subwtrshd #m 100+30 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Wolf Creek Subwatershed Site 5-1 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Zellmer Subwtrshd #b 22+50 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Arlington Subwtrshd Sta 62+50 #3 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1965 |
| Little Egypt Subwatershed Sta 174+75 #m | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| West Fork #3 Subwtrshd Sta 38+15 #6 | Low | Not Rated | 27 | Fire Protection, Stock, Or Small Fish Pond | 1961 |
| Todd Dam | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Lum Hollow Subwatershed M-13210 | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Dutch Hollow Subwatershed Site M-1 | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1983 |
| Dutch Hollow Subwatershed Site 1-5 | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1994 |
| Parnell Creek Subwatershed Site M-4 | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Big Whiskey 1 Subwatershed Site 13-1 | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Wolf Creek Subwatershed Site 6-1 | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Parnell Creek Subwatershed Site 17-1 | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Bruene-spahn Subwtrshd Sta 32+82 #6 | Low | Not Rated | 26 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Bruene Dam | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Weber Creek Subwatershed Site M-13941 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Neustrom Subwatershed Site M-3 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1971 |
| Lum Hollow Subwatershed 9-10651 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1959 |
| Bacon Creek Watershed Site L-2 | Low | Not Rated | 25 | Flood Risk Reduction | 1976 |
| Willow Creek Subwatershed Site M-4 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Idot Roadgrade Dam 7-88-47 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1979 |
| Anthon Subwatershed Site 2-2760 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1954 |
| Mc Larty-edwards Subwtrshd Sta 73+25 #2 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Mc Larty-edwards Subwtrshd Sta 54+65 #1 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| West Fork #3 Subwtrshd Site 6-2107 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1962 |
| Heisler Creek Subwtrshd Sta 8+80 #3f-2 | Low | Not Rated | 25 | Fire Protection, Stock, Or Small Fish Pond | 1960 |
| Gothier No.2 Subwatershed 14115 | Low | Not Rated | 24 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Parnell Creek Subwatershed Site M-8 | Low | Not Rated | 24 | Fire Protection, Stock, Or Small Fish Pond | 1968 |
| Zellmer Subwtrshd Sta 60+50 #a | Low | Not Rated | 24 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Sparks Dam | Low | Not Rated | 23 | Fire Protection, Stock, Or Small Fish Pond | 1964 |
| Mc Larty-edwards Subwatershed Site M-5 | Low | Not Rated | 23 | Fire Protection, Stock, Or Small Fish Pond | 1966 |
| Tyer Dam | Low | Not Rated | 22 | Fire Protection, Stock, Or Small Fish Pond | 1997 |
| Davis Subwatershed M-2410 | Low | Not Rated | 22 | Fire Protection, Stock, Or Small Fish Pond | 1958 |
| Big Coon Subwatershed Site L-3 | Low | Not Rated | 22 | Fire Protection, Stock, Or Small Fish Pond | 1998 |
| Big Whiskey 1 Subwatershed Site 13-2 | Low | Not Rated | 22 | Fire Protection, Stock, Or Small Fish Pond | 1967 |
| Weber Creek Subwatershed Site 5-2832 | Low | Not Rated | 21 | Fire Protection, Stock, Or Small Fish Pond | 1955 |
| Bacon Creek Watershed Site J-4 | Low | Not Rated | 20 | Other | 1985 |
| Big Coon Subwatershed Site M-5 | Low | Not Rated | 20 | Flood Risk Reduction | 2000 |
| Owega, Wsc8 Dam | Low | Not Rated | 9 | Fish and Wildlife Pond | 2004 |