Iowa River near Lone Tree (Tri-County Bridge)
Future / Actual / Minor
OWP 2.0 WWA Modal Title
01/11/2021, 10:04 PM UTC through 01/11/2021, 10:04 PM UTC
Sender
Sent
- Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.
Traces and Thresholds Click to turn on/off display
Observed (OBS) 07/03/2025 9:00 PM CDTRecord: 23.1 ftCATEGORY STAGE Major Flooding 22 ft Moderate Flooding 18.5 ft Minor Flooding 16 ft Action 14 ft Reliability of the Forecast:
NOTE: Forecasts are issued as needed during times of high water, but are not routinely available.
National Water Model Hydrograph
Official NWS streamflow forecasts are produced by NWS hydrologic forecasters for river gauge locations using hydrologic models which are calibrated to that location. This process considers additional guidance and information, including local expertise and experience, to produce the best forecast possible. The NWM output provides supplemental guidance to NWS forecasters and should not be considered an official NWS river forecast.
Flood Impacts
- 22 - Major Flood Stage. Hills access is flooded.
- 20 - Water reaches the bottom of the County Road W66 bridge deck.
- 19 - Tri-County Bridge is closed as there is no access from the east side due to the roadway being flooded. Homes on Lola Lane, Y Avenue and near the Tri-County Bridge are affected as access is cut off due to flooded roads.
Gauge Location
Recent Crests
1. | 15.56 ft | on 06-10-2020 |
2. | 19.09 ft | on 03-15-2019 |
3. | 20.39 ft | on 10-09-2018 |
4. | 16.12 ft | on 09-07-2018 |
5. | 15.78 ft | on 01-17-2017 |
Recent Crests
1. | 15.56 ft | on 06-10-2020 |
2. | 19.09 ft | on 03-15-2019 |
3. | 20.39 ft | on 10-09-2018 |
4. | 16.12 ft | on 09-07-2018 |
5. | 15.78 ft | on 01-17-2017 |
6. | 16.38 ft | on 12-16-2015 |
7. | 14.71 ft | on 08-12-2015 |
8. | 22.13 ft | on 07-03-2014 |
9. | 21.99 ft | on 04-19-2013 |
10. | 11.81 ft | on 05-04-2012 |
11. | 15.59 ft | on 06-15-2011 |
12. | 17.05 ft | on 02-18-2011 |
13. | 17.68 ft | on 08-05-2010 |
14. | 17.80 ft | on 03-10-2009 |
15. | 23.10 ft | on 06-15-2008 |
16. | 15.28 ft | on 04-28-2007 |
17. | 10.25 ft | on 04-07-2006 |
18. | 11.80 ft | on 05-14-2005 |
19. | 14.51 ft | on 03-06-2004 |
20. | 12.29 ft | on 05-10-2003 |
21. | 10.94 ft | on 05-12-2002 |
22. | 15.09 ft | on 03-17-2001 |
23. | 15.27 ft | on 02-10-2001 |
24. | 12.84 ft | on 06-14-2000 |
25. | 14.40 ft | on 10-18-1998 |
26. | 14.15 ft | on 04-01-1998 |
27. | 17.32 ft | on 02-21-1997 |
28. | 18.44 ft | on 05-11-1996 |
29. | 14.29 ft | on 04-28-1995 |
30. | 13.07 ft | on 03-06-1994 |
31. | 14.44 ft | on 10-01-1993 |
32. | 22.94 ft | on 07-07-1993 |
33. | 14.42 ft | on 07-31-1992 |
34. | 15.19 ft | on 06-03-1991 |
35. | 18.08 ft | on 06-20-1990 |
36. | 11.89 ft | on 09-10-1989 |
37. | 14.30 ft | on 01-21-1988 |
38. | 13.07 ft | on 10-27-1986 |
39. | 16.96 ft | on 05-18-1986 |
40. | 15.02 ft | on 03-05-1985 |
41. | 16.16 ft | on 02-23-1985 |
42. | 16.61 ft | on 02-20-1984 |
43. | 15.92 ft | on 04-03-1983 |
44. | 16.34 ft | on 06-16-1982 |
45. | 16.87 ft | on 02-23-1982 |
46. | 10.26 ft | on 06-30-1981 |
47. | 9.44 ft | on 06-15-1980 |
48. | 17.01 ft | on 03-20-1979 |
49. | 13.86 ft | on 07-23-1978 |
50. | 14.07 ft | on 03-20-1978 |
51. | 11.91 ft | on 08-16-1977 |
52. | 15.21 ft | on 04-26-1976 |
53. | 15.37 ft | on 03-21-1975 |
54. | 18.97 ft | on 05-19-1974 |
55. | 16.62 ft | on 04-22-1973 |
56. | 17.08 ft | on 01-19-1973 |
57. | 14.79 ft | on 08-07-1972 |
58. | 15.26 ft | on 02-27-1971 |
59. | 18.38 ft | on 02-21-1971 |
60. | 16.52 ft | on 03-05-1970 |
61. | 16.92 ft | on 07-20-1969 |
62. | 10.00 ft | on 11-03-1967 |
63. | 10.38 ft | on 06-11-1967 |
64. | 13.45 ft | on 01-27-1967 |
65. | 15.52 ft | on 02-11-1966 |
66. | 20.27 ft | on 09-22-1965 |
67. | 9.69 ft | on 06-24-1964 |
68. | 13.18 ft | on 03-20-1963 |
69. | 17.68 ft | on 03-21-1962 |
70. | 16.06 ft | on 03-15-1961 |
71. | 17.90 ft | on 04-01-1960 |
72. | 15.97 ft | on 03-21-1959 |
73. | 11.47 ft | on 02-26-1958 |
74. | 9.14 ft | on 06-25-1957 |
75. | 19.94 ft | on 05-25-1944 |
Historic Crests
1. | 23.10 ft | on 06-15-2008 |
2. | 22.94 ft | on 07-07-1993 |
3. | 22.13 ft | on 07-03-2014 |
4. | 21.99 ft | on 04-19-2013 |
5. | 20.39 ft | on 10-09-2018 |
Historic Crests
1. | 23.10 ft | on 06-15-2008 |
2. | 22.94 ft | on 07-07-1993 |
3. | 22.13 ft | on 07-03-2014 |
4. | 21.99 ft | on 04-19-2013 |
5. | 20.39 ft | on 10-09-2018 |
6. | 20.27 ft | on 09-22-1965 |
7. | 19.94 ft | on 05-25-1944 |
8. | 19.09 ft | on 03-15-2019 |
9. | 18.97 ft | on 05-19-1974 |
10. | 18.44 ft | on 05-11-1996 |
11. | 18.38 ft | on 02-21-1971 |
12. | 18.08 ft | on 06-20-1990 |
13. | 17.90 ft | on 04-01-1960 |
14. | 17.80 ft | on 03-10-2009 |
15. | 17.68 ft | on 03-21-1962 |
16. | 17.68 ft | on 08-05-2010 |
17. | 17.32 ft | on 02-21-1997 |
18. | 17.08 ft | on 01-19-1973 |
19. | 17.05 ft | on 02-18-2011 |
20. | 17.01 ft | on 03-20-1979 |
21. | 16.96 ft | on 05-18-1986 |
22. | 16.92 ft | on 07-20-1969 |
23. | 16.87 ft | on 02-23-1982 |
24. | 16.62 ft | on 04-22-1973 |
25. | 16.61 ft | on 02-20-1984 |
26. | 16.52 ft | on 03-05-1970 |
27. | 16.38 ft | on 12-16-2015 |
28. | 16.34 ft | on 06-16-1982 |
29. | 16.16 ft | on 02-23-1985 |
30. | 16.12 ft | on 09-07-2018 |
31. | 16.06 ft | on 03-15-1961 |
32. | 15.97 ft | on 03-21-1959 |
33. | 15.92 ft | on 04-03-1983 |
34. | 15.78 ft | on 01-17-2017 |
35. | 15.59 ft | on 06-15-2011 |
36. | 15.56 ft | on 06-10-2020 |
37. | 15.52 ft | on 02-11-1966 |
38. | 15.37 ft | on 03-21-1975 |
39. | 15.28 ft | on 04-28-2007 |
40. | 15.27 ft | on 02-10-2001 |
41. | 15.26 ft | on 02-27-1971 |
42. | 15.21 ft | on 04-26-1976 |
43. | 15.19 ft | on 06-03-1991 |
44. | 15.09 ft | on 03-17-2001 |
45. | 15.02 ft | on 03-05-1985 |
46. | 14.79 ft | on 08-07-1972 |
47. | 14.71 ft | on 08-12-2015 |
48. | 14.51 ft | on 03-06-2004 |
49. | 14.44 ft | on 10-01-1993 |
50. | 14.42 ft | on 07-31-1992 |
51. | 14.40 ft | on 10-18-1998 |
52. | 14.30 ft | on 01-21-1988 |
53. | 14.29 ft | on 04-28-1995 |
54. | 14.15 ft | on 04-01-1998 |
55. | 14.07 ft | on 03-20-1978 |
56. | 13.86 ft | on 07-23-1978 |
57. | 13.45 ft | on 01-27-1967 |
58. | 13.18 ft | on 03-20-1963 |
59. | 13.07 ft | on 10-27-1986 |
60. | 13.07 ft | on 03-06-1994 |
61. | 12.84 ft | on 06-14-2000 |
62. | 12.29 ft | on 05-10-2003 |
63. | 11.91 ft | on 08-16-1977 |
64. | 11.89 ft | on 09-10-1989 |
65. | 11.81 ft | on 05-04-2012 |
66. | 11.80 ft | on 05-14-2005 |
67. | 11.47 ft | on 02-26-1958 |
68. | 10.94 ft | on 05-12-2002 |
69. | 10.38 ft | on 06-11-1967 |
70. | 10.26 ft | on 06-30-1981 |
71. | 10.25 ft | on 04-07-2006 |
72. | 10.00 ft | on 11-03-1967 |
73. | 9.69 ft | on 06-24-1964 |
74. | 9.44 ft | on 06-15-1980 |
75. | 9.14 ft | on 06-25-1957 |
Vertical Datum Table
type | NGVD29 |
---|---|
major Flooding | 610.16 ft |
moderate Flooding | 606.66 ft |
minor Flooding | 604.16 ft |
action | 602.16 ft |
Latest Value | 598.57 ft |
Gauge Zero | 588.16 ft |
Gauge Photos
No Images Found
Probability Information
Unique Local Info
Collaborative Agencies
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.