Big Blue River (IN) at Carthage

Last updated: Apr 1, 2025, 1:56 PM UTC

Flood Watch

Upstream gauge unavailable

Warning: no valid ratings curve available. Transformations to and from FEET/CFS/KCFS will not happen.

US Geological Survey
Observations courtesy of U.S. Geological Survey

Scale to Flood Categories

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Traces and Thresholds Click to turn on/off display

Observed (OBS) 04/01/2025 8:45 AM EDT

Record: 14.6 ft

Low Threshold: 27 cfs

CATEGORY STAGE

Major Flooding 13 ft

Moderate Flooding 10 ft

Minor Flooding 7 ft

Action 5 ft

Reliability of the Forecast:

NOTE: Forecasts are issued as needed during times of high water, but are not routinely available.
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	CATEGORY	STAGE
	Major Flooding	13 ft
	Moderate Flooding	10 ft
	Minor Flooding	7 ft
	Action	5 ft

Flood Impacts 🅘

14 - Near record to record flood along the Big Blue River. Many county and some city streets impassable. Eastern and southern parts of Carthage, extreme southern sections of Knightstown and extreme eastern Raysville flood extensively. Many evacuations occur in Knightstown, Carthage and rural northwest Rush county.
13 - A serious flood in progress. Many local roads are impassable. Some evacuations occur in southern parts of Carthage, extreme southern sections of Knightstown, eastern Raysville and rural areas of northwest Rush County. Used auto parts yard in Carthage is extensively flooded.
11 - Extensive flooding is in progress. Many local roads flood and are impassable to most vehicles. A few evacuations are necessary in southern parts of Carthage, extreme southern sections of Knightstown, eastern Raysville and a few rural areas of northwest Rush County. Used auto parts yard in Carthage is flooded.

Gauge Info

Coordinates	39.7439, -85.5758
RFC	OHRFC
State	IN
WFO	IND
County	Rush
Data Provider(s)
US Geological Survey	USGS--Water Resources of the United States
USGS	03361000

Gauge Location

Recent Crests

1.	8.62 ft	on 03-25-2023	(P)
2.	5.82 ft	on 02-28-2021
3.	8.36 ft	on 01-11-2020
4.	10.30 ft	on 06-16-2019
5.	7.43 ft	on 04-26-2019

Historic Crests

1.	14.62 ft	on 03-04-1963
2.	13.28 ft	on 01-21-1959
3.	12.91 ft	on 11-15-1993
4.	12.42 ft	on 06-14-1958
5.	12.31 ft	on 12-30-1990

Vertical Datum Table

type	NGVD29
major Flooding	872.33 ft
moderate Flooding	869.33 ft
minor Flooding	866.33 ft
action	864.33 ft
Latest Value	860.38 ft
Gauge Zero	859.33 ft

Gauge Photos

Photo 1 of 6

Looking north from CR 900N at Big Blue River at Carthage on 04-05-01.

Probability Information

No Images Available

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.

Resources

Hydrologic Resource Links

Additional Resource Links

WFO Information

Weather Forecast Office

Indianapolis

6900 West Hanna Ave.

Indianapolis, IN 46241

(317) 856-0360

Ask Questions/Webmaster

Official Homepage

1.	8.62 ft	on 03-25-2023	(P)
2.	5.82 ft	on 02-28-2021
3.	8.36 ft	on 01-11-2020
4.	10.30 ft	on 06-16-2019
5.	7.43 ft	on 04-26-2019
6.	7.01 ft	on 03-10-2019
7.	9.53 ft	on 02-08-2019
8.	7.64 ft	on 01-24-2019
9.	8.50 ft	on 11-02-2018
10.	8.25 ft	on 09-09-2018
11.	9.69 ft	on 04-03-2018	(P)
12.	8.15 ft	on 02-25-2018	(P)
13.	6.20 ft	on 11-06-2017	(P)
14.	8.02 ft	on 07-08-2017	(P)
15.	8.90 ft	on 06-24-2017	(P)
16.	6.50 ft	on 05-25-2017	(P)
17.	7.22 ft	on 05-05-2017	(P)
18.	7.38 ft	on 01-20-2017	(P)
19.	8.49 ft	on 12-27-2015	(P)
20.	9.81 ft	on 06-27-2015
21.	11.96 ft	on 12-22-2013
22.	9.64 ft	on 01-13-2013
23.	10.34 ft	on 04-20-2011
24.	10.38 ft	on 03-06-2011
25.	10.45 ft	on 02-28-2011
26.	10.43 ft	on 06-22-2010
27.	8.00 ft	on 02-12-2009
28.	10.91 ft	on 06-04-2008
29.	9.23 ft	on 02-06-2008
30.	10.60 ft	on 01-09-2008
31.	9.33 ft	on 01-15-2007
32.	9.32 ft	on 12-01-2006
33.	10.36 ft	on 03-12-2006
34.	11.22 ft	on 01-06-2005
35.	7.73 ft	on 06-17-2004
36.	10.75 ft	on 06-12-2004
37.	5.10 ft	on 04-16-1998
38.	7.95 ft	on 04-10-1998
39.	9.36 ft	on 06-01-1997
40.	6.20 ft	on 03-01-1997
41.	6.08 ft	on 02-27-1997
42.	6.22 ft	on 02-04-1997
43.	7.70 ft	on 01-22-1997
44.	7.82 ft	on 12-24-1996
45.	10.10 ft	on 05-29-1996
46.	6.38 ft	on 05-15-1996
47.	8.40 ft	on 05-09-1996
48.	8.27 ft	on 05-08-1996
49.	7.65 ft	on 05-06-1996
50.	8.56 ft	on 05-04-1996
51.	10.10 ft	on 04-29-1996
52.	7.85 ft	on 04-23-1996
53.	9.35 ft	on 05-19-1995
54.	7.47 ft	on 05-18-1995
55.	5.77 ft	on 04-22-1995
56.	4.86 ft	on 03-08-1995
57.	7.83 ft	on 04-12-1994
58.	7.30 ft	on 04-10-1994
59.	8.88 ft	on 01-29-1994
60.	6.19 ft	on 12-05-1993
61.	10.14 ft	on 11-18-1993
62.	12.91 ft	on 11-15-1993
63.	6.12 ft	on 10-21-1993
64.	7.55 ft	on 07-24-1992
65.	9.41 ft	on 06-18-1992
66.	8.36 ft	on 04-18-1992
67.	10.25 ft	on 05-30-1991
68.	7.59 ft	on 03-23-1991
69.	7.55 ft	on 03-13-1991
70.	12.31 ft	on 12-30-1990
71.	7.71 ft	on 08-29-1990
72.	9.22 ft	on 05-16-1990
73.	6.89 ft	on 05-13-1990
74.	7.17 ft	on 03-11-1990
75.	8.73 ft	on 02-15-1990
76.	9.44 ft	on 09-15-1989
77.	10.09 ft	on 05-26-1989
78.	6.86 ft	on 05-23-1989
79.	8.91 ft	on 04-04-1989
80.	6.08 ft	on 04-07-1988
81.	8.10 ft	on 07-02-1987
82.	10.76 ft	on 10-04-1986
83.	10.35 ft	on 10-02-1986
84.	9.28 ft	on 12-11-1985
85.	7.78 ft	on 11-27-1985
86.	9.33 ft	on 03-31-1985
87.	9.94 ft	on 02-23-1985
88.	9.21 ft	on 04-22-1984
89.	7.21 ft	on 03-16-1984
90.	8.15 ft	on 12-12-1983
91.	7.33 ft	on 05-02-1983
92.	7.29 ft	on 03-16-1982
93.	7.38 ft	on 02-21-1982
94.	9.29 ft	on 02-17-1982
95.	8.05 ft	on 01-31-1982
96.	8.35 ft	on 01-23-1982
97.	8.48 ft	on 05-27-1981
98.	7.80 ft	on 06-08-1980
99.	7.48 ft	on 11-28-1979
100.	10.25 ft	on 08-02-1979
101.	9.69 ft	on 07-29-1979
102.	7.34 ft	on 07-26-1979
103.	9.24 ft	on 03-04-1979
104.	9.75 ft	on 02-24-1979
105.	8.48 ft	on 03-14-1978
106.	8.73 ft	on 12-14-1977
107.	5.93 ft	on 04-02-1977
108.	8.30 ft	on 01-26-1976
109.	8.42 ft	on 04-25-1975
110.	10.32 ft	on 02-23-1975
111.	7.96 ft	on 01-29-1975
112.	8.95 ft	on 06-23-1974
113.	7.84 ft	on 01-19-1974
114.	10.99 ft	on 06-27-1973
115.	9.23 ft	on 06-06-1973
116.	7.93 ft	on 03-11-1973
117.	8.34 ft	on 11-14-1972
118.	7.27 ft	on 11-02-1972
119.	7.00 ft	on 04-07-1972
120.	8.91 ft	on 02-22-1971
121.	8.13 ft	on 02-20-1971
122.	7.41 ft	on 02-17-1971
123.	9.14 ft	on 02-05-1971
124.	9.13 ft	on 01-29-1970
125.	7.20 ft	on 04-18-1969
126.	9.14 ft	on 01-30-1969
127.	9.08 ft	on 01-18-1969
128.	8.10 ft	on 08-09-1968
129.	7.91 ft	on 05-27-1968
130.	9.66 ft	on 05-24-1968
131.	8.01 ft	on 02-02-1968
132.	7.84 ft	on 01-30-1968
133.	8.82 ft	on 12-10-1966
134.	7.98 ft	on 11-27-1966
135.	6.18 ft	on 02-11-1966
136.	7.36 ft	on 04-26-1965
137.	7.92 ft	on 04-09-1965
138.	9.56 ft	on 02-10-1965
139.	10.65 ft	on 04-22-1964
140.	10.33 ft	on 03-10-1964
141.	7.31 ft	on 04-23-1963
142.	9.33 ft	on 03-20-1963
143.	14.62 ft	on 03-04-1963
144.	8.62 ft	on 02-26-1962
145.	9.55 ft	on 07-21-1961
146.	9.34 ft	on 05-08-1961
147.	12.08 ft	on 04-25-1961
148.	8.32 ft	on 03-13-1961
149.	8.40 ft	on 02-10-1960
150.	9.90 ft	on 02-10-1959
151.	13.28 ft	on 01-21-1959
152.	8.81 ft	on 08-03-1958
153.	10.98 ft	on 08-01-1958
154.	12.42 ft	on 06-14-1958
155.	10.52 ft	on 06-11-1958
156.	7.59 ft	on 05-06-1958
157.	7.79 ft	on 12-20-1957
158.	9.76 ft	on 06-28-1957
159.	9.77 ft	on 06-18-1957
160.	8.92 ft	on 04-04-1957
161.	10.59 ft	on 05-28-1956
162.	10.08 ft	on 02-25-1956
163.	11.52 ft	on 11-16-1955
164.	5.97 ft	on 01-06-1955
165.	10.02 ft	on 04-05-1954
166.	7.72 ft	on 07-06-1953
167.	9.17 ft	on 03-04-1953
168.	8.50 ft	on 03-11-1952
169.	7.63 ft	on 02-04-1952
170.	11.02 ft	on 01-27-1952
171.	7.57 ft	on 12-07-1951
172.	11.20 ft	on 02-21-1951
173.	7.60 ft	on 02-12-1951
174.	7.70 ft	on 01-15-1951
175.	8.40 ft	on 12-07-1950
176.	7.50 ft	on 12-04-1950
177.	9.20 ft	on 11-21-1950
178.	10.60 ft	on 01-05-1949

1.	14.62 ft	on 03-04-1963
2.	13.28 ft	on 01-21-1959
3.	12.91 ft	on 11-15-1993
4.	12.42 ft	on 06-14-1958
5.	12.31 ft	on 12-30-1990
6.	12.08 ft	on 04-25-1961
7.	11.96 ft	on 12-22-2013
8.	11.52 ft	on 11-16-1955
9.	11.22 ft	on 01-06-2005
10.	11.20 ft	on 02-21-1951
11.	11.02 ft	on 01-27-1952
12.	10.99 ft	on 06-27-1973
13.	10.98 ft	on 08-01-1958
14.	10.91 ft	on 06-04-2008
15.	10.76 ft	on 10-04-1986
16.	10.75 ft	on 06-12-2004
17.	10.65 ft	on 04-22-1964
18.	10.60 ft	on 01-05-1949
19.	10.60 ft	on 01-09-2008
20.	10.59 ft	on 05-28-1956
21.	10.52 ft	on 06-11-1958
22.	10.45 ft	on 02-28-2011
23.	10.43 ft	on 06-22-2010
24.	10.38 ft	on 03-06-2011
25.	10.36 ft	on 03-12-2006
26.	10.35 ft	on 10-02-1986
27.	10.34 ft	on 04-20-2011
28.	10.33 ft	on 03-10-1964
29.	10.32 ft	on 02-23-1975
30.	10.30 ft	on 06-16-2019
31.	10.25 ft	on 08-02-1979
32.	10.25 ft	on 05-30-1991
33.	10.14 ft	on 11-18-1993
34.	10.10 ft	on 04-29-1996
35.	10.10 ft	on 05-29-1996
36.	10.09 ft	on 05-26-1989
37.	10.08 ft	on 02-25-1956
38.	10.02 ft	on 04-05-1954
39.	9.94 ft	on 02-23-1985
40.	9.90 ft	on 02-10-1959
41.	9.81 ft	on 06-27-2015
42.	9.77 ft	on 06-18-1957
43.	9.76 ft	on 06-28-1957
44.	9.75 ft	on 02-24-1979
45.	9.69 ft	on 07-29-1979
46.	9.69 ft	on 04-03-2018	(P)
47.	9.66 ft	on 05-24-1968
48.	9.64 ft	on 01-13-2013
49.	9.56 ft	on 02-10-1965
50.	9.55 ft	on 07-21-1961
51.	9.53 ft	on 02-08-2019
52.	9.44 ft	on 09-15-1989
53.	9.41 ft	on 06-18-1992
54.	9.36 ft	on 06-01-1997
55.	9.35 ft	on 05-19-1995
56.	9.34 ft	on 05-08-1961
57.	9.33 ft	on 03-20-1963
58.	9.33 ft	on 03-31-1985
59.	9.33 ft	on 01-15-2007
60.	9.32 ft	on 12-01-2006
61.	9.29 ft	on 02-17-1982
62.	9.28 ft	on 12-11-1985
63.	9.24 ft	on 03-04-1979
64.	9.23 ft	on 06-06-1973
65.	9.23 ft	on 02-06-2008
66.	9.22 ft	on 05-16-1990
67.	9.21 ft	on 04-22-1984
68.	9.20 ft	on 11-21-1950
69.	9.17 ft	on 03-04-1953
70.	9.14 ft	on 02-05-1971
71.	9.14 ft	on 01-30-1969
72.	9.13 ft	on 01-29-1970
73.	9.08 ft	on 01-18-1969
74.	8.95 ft	on 06-23-1974
75.	8.92 ft	on 04-04-1957
76.	8.91 ft	on 04-04-1989
77.	8.91 ft	on 02-22-1971
78.	8.90 ft	on 06-24-2017	(P)
79.	8.88 ft	on 01-29-1994
80.	8.82 ft	on 12-10-1966
81.	8.81 ft	on 08-03-1958
82.	8.73 ft	on 02-15-1990
83.	8.73 ft	on 12-14-1977
84.	8.62 ft	on 03-25-2023	(P)
85.	8.62 ft	on 02-26-1962
86.	8.56 ft	on 05-04-1996
87.	8.50 ft	on 03-11-1952
88.	8.50 ft	on 11-02-2018
89.	8.49 ft	on 12-27-2015	(P)
90.	8.48 ft	on 05-27-1981
91.	8.48 ft	on 03-14-1978
92.	8.42 ft	on 04-25-1975
93.	8.40 ft	on 12-07-1950
94.	8.40 ft	on 05-09-1996
95.	8.40 ft	on 02-10-1960
96.	8.36 ft	on 04-18-1992
97.	8.36 ft	on 01-11-2020
98.	8.35 ft	on 01-23-1982
99.	8.34 ft	on 11-14-1972
100.	8.32 ft	on 03-13-1961
101.	8.30 ft	on 01-26-1976
102.	8.27 ft	on 05-08-1996
103.	8.25 ft	on 09-09-2018
104.	8.15 ft	on 02-25-2018	(P)
105.	8.15 ft	on 12-12-1983
106.	8.13 ft	on 02-20-1971
107.	8.10 ft	on 08-09-1968
108.	8.10 ft	on 07-02-1987
109.	8.05 ft	on 01-31-1982
110.	8.02 ft	on 07-08-2017	(P)
111.	8.01 ft	on 02-02-1968
112.	8.00 ft	on 02-12-2009
113.	7.98 ft	on 11-27-1966
114.	7.96 ft	on 01-29-1975
115.	7.95 ft	on 04-10-1998
116.	7.93 ft	on 03-11-1973
117.	7.92 ft	on 04-09-1965
118.	7.91 ft	on 05-27-1968
119.	7.85 ft	on 04-23-1996
120.	7.84 ft	on 01-19-1974
121.	7.84 ft	on 01-30-1968
122.	7.83 ft	on 04-12-1994
123.	7.82 ft	on 12-24-1996
124.	7.80 ft	on 06-08-1980
125.	7.79 ft	on 12-20-1957
126.	7.78 ft	on 11-27-1985
127.	7.73 ft	on 06-17-2004
128.	7.72 ft	on 07-06-1953
129.	7.71 ft	on 08-29-1990
130.	7.70 ft	on 01-15-1951
131.	7.70 ft	on 01-22-1997
132.	7.65 ft	on 05-06-1996
133.	7.64 ft	on 01-24-2019
134.	7.63 ft	on 02-04-1952
135.	7.60 ft	on 02-12-1951
136.	7.59 ft	on 03-23-1991
137.	7.59 ft	on 05-06-1958
138.	7.57 ft	on 12-07-1951
139.	7.55 ft	on 03-13-1991
140.	7.55 ft	on 07-24-1992
141.	7.50 ft	on 12-04-1950
142.	7.48 ft	on 11-28-1979
143.	7.47 ft	on 05-18-1995
144.	7.43 ft	on 04-26-2019
145.	7.41 ft	on 02-17-1971
146.	7.38 ft	on 01-20-2017	(P)
147.	7.38 ft	on 02-21-1982
148.	7.36 ft	on 04-26-1965
149.	7.34 ft	on 07-26-1979
150.	7.33 ft	on 05-02-1983
151.	7.31 ft	on 04-23-1963
152.	7.30 ft	on 04-10-1994
153.	7.29 ft	on 03-16-1982
154.	7.27 ft	on 11-02-1972
155.	7.22 ft	on 05-05-2017	(P)
156.	7.21 ft	on 03-16-1984
157.	7.20 ft	on 04-18-1969
158.	7.17 ft	on 03-11-1990
159.	7.01 ft	on 03-10-2019
160.	7.00 ft	on 04-07-1972
161.	6.89 ft	on 05-13-1990
162.	6.86 ft	on 05-23-1989
163.	6.50 ft	on 05-25-2017	(P)
164.	6.38 ft	on 05-15-1996
165.	6.22 ft	on 02-04-1997
166.	6.20 ft	on 11-06-2017	(P)
167.	6.20 ft	on 03-01-1997
168.	6.19 ft	on 12-05-1993
169.	6.18 ft	on 02-11-1966
170.	6.12 ft	on 10-21-1993
171.	6.08 ft	on 02-27-1997
172.	6.08 ft	on 04-07-1988
173.	5.97 ft	on 01-06-1955
174.	5.93 ft	on 04-02-1977
175.	5.82 ft	on 02-28-2021
176.	5.77 ft	on 04-22-1995
177.	5.10 ft	on 04-16-1998
178.	4.86 ft	on 03-08-1995