South Harbor space 629
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Around here
Around South Harbor space 629
- Ravens Roost CabinCabin rental2.6 mi
- Petersburg Lake CabinCabin rental8.6 mi
- Salt Chuck East CabinCabin rental · Good for boating13.9 mi
- Breiland Slough CabinCabin rental · Good for boating14 mi
- Cascade Creek CabinCabin rental · Good for boating14.6 mi
- Portage Bay CabinCabin rental · Good for boating15.3 mi
Data Source: Recreation.gov · Public land: USGS PAD-US
Typical flow by month
2021 to 2025
The water at South Harbor space 629 typically runs highest in June, at a median 83 cfs, and lowest in February, at 34 cfs. The highest flow on record for any single day is 982 cfs, in 2025.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 46 | 19 to 153 |
| February | 34 | 16 to 119 |
| March | 42 | 19 to 88 |
| April | 37 | 19 to 88 |
| May | 81 | 48 to 180 |
| June | 83 | 59 to 136 |
| July | 55 | 38 to 110 |
| August | 39 | 15 to 102 |
| September | 83 | 29 to 184 |
| October | 81 | 38 to 197 |
| November | 47 | 23 to 127 |
| December | 43 | 14 to 160 |
Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 4 years of record. Statistics published by the US Geological Survey for Twelvemile C near Petersburg AK (site 15087585). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Current conditions
Today · Fri
52Maybe/ 100
Gusts to 44 kt · 100% chance of rain
StormsWaves 1.4 ft46°FRain 100%Wind 15 kt, gusts 44
Waves
0.3 ft @ 2s
Wind
6 kt
Gusts 44 kt
Water
42°F
Air
43°F
Streamflow
321 cfs
Normal (75th)
Water level
24.67 ft
Tides
Rising
High 15.1 ft at 11:33 PM
Predicted at Petersburg, under 1Â km away.
Get a 2027 tide calendar for this stationForecast from Open-Meteo global models (NOAA & ECMWF). Tide predictions: NOAA CO-OPS, feet above mean lower low water. See full conditions →
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