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San Juan water levels in 2018
Annual rank12 / 57
vs. average4.3 cm
Highest monthly peak0.53 mNovember 2018
Monthly mean vs. previous year
| Month | 2018 (cm) | 2017 (cm) | Diff | Peak (m) |
|---|---|---|---|---|
| Jan | 4.9 | 2.1 | 2.8 | 0.50 |
| Feb | -1.8 | 0.9 | -2.7 | 0.40 |
| Mar | 2.1 | -0.3 | 2.4 | 0.38 |
| Apr | 1.1 | 3.6 | -2.5 | 0.33 |
| May | 0.1 | 1.2 | -1.1 | 0.37 |
| Jun | 0.6 | 2.6 | -2.0 | 0.36 |
| Jul | 4.0 | 4.1 | -0.1 | 0.42 |
| Aug | 11.0 | 9.5 | 1.5 | 0.46 |
| Sep | 17.0 | 7.5 | 9.5 | 0.52 |
| Oct | 11.8 | 5.3 | 6.5 | 0.45 |
| Nov | 12.7 | 10.4 | 2.3 | 0.53 |
| Dec | 4.0 | 5.3 | -1.3 | 0.42 |
Nearby years (cm vs. average)
+2.8
+6.8
+10.0
+7.0
+3.0
+4.3
+6.5
+5.0
+4.4
+7.2
+8.2
Monthly means are relative to the station's mean sea level (MSL) datum.
About this page
The 2018 annual mean water level ranked 12 of 57 years (4.3 cm vs. the period average).