Overview Realtime Historical Map View
Extreme Heat Warning
2026-09-04T19:00:00-05:00

* WHAT...Dangerously hot conditions with heat index values of 100 to 110. * WHERE...Portions of north central, northwest, and west central Illinois, east central and southeast Iowa, and northeast Missouri. * WHEN...Until 7 PM CDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Duck Creek At 110th Ave At Davenport, Ia Historical Data

Historical Data


Streamflow Range


Date Average 2016 2015
01-01 6.9
01-02 6.0
01-03 5.5
01-04 3.6
01-05 3.8
01-06 3.4
01-07 3.3
01-08 4.3
01-09 21.0
01-10 11.0
01-11 8.4
01-12 9.2
01-13 4.5
01-14 4.5
01-15 6.9
01-16 2.7
01-17 1.1
01-18 1.6
01-19 1.8
01-20 1.0
02-24 4.3
02-25 4.0
02-26 3.8
02-27 3.9
02-28 4.0
02-29 3.8
03-01 3.9
03-02 3.4
03-03 3.6
03-04 3.9
03-05 3.5
03-06 3.3
03-07 3.5
03-08 3.7
03-09 4.9
03-10 4.7
03-11 5.2
03-12 5.0
03-13 6.2
03-14 7.2
03-15 7.2
03-16 55.0
03-17 25.0
03-18 17.0
03-19 14.0
03-21 12.0
03-22 10.0
03-23 9.6
03-24 10.0
03-25 23.0
03-26 20.0
03-27 16.0
03-28 16.0
03-29 16.0
03-30 15.0
04-01 12.0
04-02 11.0
04-03 9.8
04-04 9.6
04-05 8.0
04-06 10.0
04-07 8.0
04-08 8.2
04-09 6.8
04-10 7.7
04-11 7.5
04-12 6.8
04-13 7.1
04-14 6.0
04-21 5.5
04-22 6.5
04-23 5.5
04-24 5.8
04-25 5.2
04-26 5.1
04-27 5.1
04-28 5.2
04-29 5.0
04-30 7.1
05-01 18.0
05-02 36.0
05-03 25.0
05-04 22.0
05-05 16.0
05-06 16.0
05-07 14.0
05-08 13.0
05-09 12.0
05-10 15.0
05-11 16.0
05-12 15.0
05-13 14.0
05-14 16.0
05-15 14.0
05-16 14.0
05-17 12.0
05-18 12.0
05-19 11.0
05-20 11.0
05-21 10.0
05-22 9.6
05-23 9.4
05-24 9.4
05-25 8.7
05-26 8.5
05-27 9.6
05-28 11.0
05-29 11.0
05-30 10.0
05-31 9.6
06-01 20.0
06-02 34.0
06-03 22.0
06-04 17.0
06-05 16.0
06-06 14.0
06-07 12.0
06-08 11.0
06-09 10.0
06-10 12.0
06-11 10.0
06-12 9.4
06-13 8.9
06-14 8.4
06-15 9.6
06-16 8.7
06-17 8.0
06-18 7.5
06-20 41.0
06-21 34.0
06-22 31.0
06-23 28.0
06-24 24.0
06-25 31.0
06-26 28.0
06-27 25.0
06-28 22.0
06-29 36.0
06-30 29.0
07-01 24.0
07-02 21.0
07-03 20.0
07-04 18.0
07-05 16.5
07-06 15.5
07-07 1040.0
07-08 131.0
07-09 80.0
07-10 33.5
07-11 30.0
07-12 39.5
07-13 32.0
07-14 29.0
07-15 23.5
07-16 22.0
07-17 48.0
07-18 31.0
07-19 22.5
07-20 20.0
07-21 62.0
07-22 42.5
07-23 34.0
07-24 26.0
07-25 21.5
07-26 18.5
07-27 17.0
07-28 15.5
07-29 12.5
07-30 15.0
07-31 12.5
08-01 11.1
08-02 12.95
08-03 10.85
08-04 10.1
08-05 64.45
08-06 14.35
08-07 11.7
08-08 14.0
08-09 13.0
08-10 12.0
08-11 11.0
08-12 455.7
08-13 111.1
08-14 46.2
08-15 37.05
08-16 28.95
08-17 22.9
08-18 34.0
08-19 27.0
08-20 25.0
08-21 28.0
08-22 22.0
08-23 14.0
08-24 7.9
08-25 7.1
08-26 47.4
08-27 32.25
08-28 24.3
08-29 51.1
08-30 60.3
08-31 57.6
09-01 35.95
09-02 27.25
09-03 23.2
09-04 19.55
09-05 17.8
09-06 26.0
09-07 14.25
09-08 70.0
09-09 40.95
09-10 28.25
09-11 22.2
09-12 19.6
09-13 17.45
09-14 15.95
09-15 14.35
09-16 13.8
09-17 13.4
09-18 22.0
09-19 194.0
09-20 15.5
09-21 12.95
09-22 19.0
09-23 12.1
09-24 12.2
09-25 11.8
09-26 12.6
09-27 15.5
09-28 17.0
09-29 14.5
09-30 16.5
10-01 16.0
10-02 16.5
10-03 16.8
10-04 24.0
10-05 26.0
10-06 26.0
10-07 27.0
10-08 28.0
10-09 29.0
10-10 29.0
10-11 30.0
10-12 30.0
10-13 30.0
10-14 30.0
10-15 29.0
10-16 30.0
10-17 31.0
10-18 31.0
10-19 32.0
10-20 31.0
10-21 35.0
10-22 32.0
10-23 32.0
10-24 34.0
10-25 33.0
10-26 33.0
10-27 33.0
10-28 41.0
10-29 41.0
10-30 34.0
10-31 33.0
11-01 41.0
11-03 32.0
11-04 30.0
11-05 28.0
11-06 33.0
11-07 30.0
11-08 28.0
11-09 27.0
11-10 26.0
11-11 9.2
11-12 70.0
11-13 15.0
11-14 10.0
11-15 8.5
11-16 7.2
11-17 6.6
11-21 19.0
11-22 14.0
11-23 12.0
11-24 9.8
11-25 11.0
11-26 29.0
11-27 893.0
11-29 30.0
11-30 19.0
12-01 64.0
12-02 23.0
12-03 13.0
12-04 9.8
12-05 7.5
12-06 6.3
12-07 5.1
12-08 4.6
12-09 15.0
12-10 3.3
12-11 2.5
12-12 2.3
12-13 2.0
12-17 12.0
12-18 8.5
12-19 6.2
12-22 34.0
12-23 17.0
12-24 66.0
12-25 24.0
12-26 16.0
12-27 11.0
12-28 9.1
12-30 10.0
12-31 8.7

Annual Peak Streamflow


Seasonal Comparison


Oceanic Nino Index