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South Pass water levels in 1998
Annual rank1 / 14
vs. average30.7 cm
Highest monthly peak0.72 mSeptember 1998
Monthly mean vs. previous year
| Month | 1998 (cm) | 1997 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | -22.0 | -16.8 | -5.2 | 0.19 |
| Feb | -13.8 | -16.1 | 2.3 | 0.42 |
| Mar | -13.4 | -13.2 | -0.2 | 0.30 |
| Apr | -10.2 | -6.6 | -3.6 | 0.28 |
| May | -9.8 | -15.6 | 5.8 | 0.24 |
| Jun | -16.5 | -11.6 | -4.9 | 0.20 |
| Jul | -21.5 | -15.5 | -6.0 | 0.10 |
| Aug | -6.6 | -10.3 | 3.7 | 0.32 |
| Sep | 16.4 | -3.1 | 19.5 | 0.72 |
| Oct | 4.5 | -1.3 | 5.8 | 0.34 |
| Nov | -7.1 | -16.7 | 9.6 | 0.32 |
| Dec | -10.9 | -28.4 | 17.5 | – |
Nearby years (cm vs. average)
+16.9
+21.0
+20.6
+27.0
+30.7
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 1998 annual mean water level ranked 1 of 14 years (30.7 cm vs. the period average).