Montgomery Point Lock & Dam
White River (MPDA4)
Mississippi River at Helena Mississippi River at Arkansas City
Lock No. 1
Time Elevation Tailwater
Date CS/CDT (ft-NGVD29) (ft-NGVD29)
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15JAN2026 0100 117.14 113.24
15JAN2026 0200 117.15 113.29
15JAN2026 0300 117.13 113.31
15JAN2026 0400 117.13 113.42
15JAN2026 0500 117.12 113.39
15JAN2026 0600 117.11 113.43
15JAN2026 0700 117.11 113.44
15JAN2026 0800 117.11 113.45
15JAN2026 0900 117.09 113.53
15JAN2026 1000 117.12 113.56
15JAN2026 1100 117.11 113.62
15JAN2026 1200 117.11 113.66
15JAN2026 1300 117.09 113.66
15JAN2026 1400 117.13 113.76
15JAN2026 1500 117.13 113.74
15JAN2026 1600 117.11 113.74
15JAN2026 1700 117.11 113.88
15JAN2026 1800 117.11 113.87
15JAN2026 1900 117.10 113.91
15JAN2026 2000 117.10 113.92
15JAN2026 2100 117.10 113.99
15JAN2026 2200 117.10 114.05
15JAN2026 2300 117.09 114.08
15JAN2026 2400 117.09 114.05
16JAN2026 0100 117.07 114.23
16JAN2026 0200 117.09 114.22
16JAN2026 0300 117.08 114.27
16JAN2026 0400 117.09 114.30
16JAN2026 0500 117.11 114.34
16JAN2026 0600 117.15 114.31
16JAN2026 0700 117.15 114.36
16JAN2026 0800 117.29 114.40
16JAN2026 0900 117.10 114.37
16JAN2026 1000 117.15 114.39
16JAN2026 1100 117.09 114.42
16JAN2026 1200 117.12 114.44
7-Day Plot Data
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