Around here
Around Arroyo Grande Creek
Temperature from a 1980 federal survey. The record says nothing about access, ownership or current conditions.
Data Source: Recreation.gov · Source: USGS GNIS · Thermal springs: NOAA NCEI (1980) · Public land: USGS PAD-US · Forest roads: USDA Forest Service MVUM · BLM routes and areas: Bureau of Land Management (simplified for web display)
About this river
Arroyo Grande Creek is a 21.2 mile river. Streamflow is measured at the USGS gauge Lopez C near Arroyo Grande CA (site 11141280). The National Hydrography Dataset places it at stream order 6. Reach geometry comes from the USGS National Hydrography Dataset.
Typical flow by month
1967 to 2026
Arroyo Grande Creek typically runs highest in March, at a median 9.5 cfs, and lowest in September, at 1.9 cfs. The highest flow on record for any single day is 1,360 cfs, in 1969.
Show the numbers
| Month | Typical (cfs) | Usual range (cfs) |
|---|---|---|
| January | 5.3 | 3.4 to 12 |
| February | 6.5 | 3.9 to 20 |
| March | 9.5 | 4.2 to 22 |
| April | 6.2 | 3.5 to 14 |
| May | 4.3 | 2.7 to 7.7 |
| June | 3.0 | 1.9 to 5.3 |
| July | 2.3 | 1.4 to 3.8 |
| August | 2.1 | 1.3 to 3.5 |
| September | 1.9 | 1.1 to 3.2 |
| October | 2.3 | 1.6 to 3.6 |
| November | 2.9 | 2.1 to 4.1 |
| December | 3.7 | 2.5 to 5.0 |
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 58 years of record. Statistics published by the US Geological Survey for Lopez C near Arroyo Grande CA (site 11141280). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.
Boat access nearby
2 mapped launches sit in the mapped area of Arroyo Grande Creek, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.
- Lopez Lake Regional ParkLopez LakePublic
- Lopez Lake Marina and StoreLopez LakePublic
Made to print
Put Arroyo Grande Creek on your wall
This river section as an art print, drawn over the real terrain with its miles, plus the trails, roads and peaks around it. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.
Embed this gauge on your site
Paste this snippet anywhere, an outfitter page, a club site, a trip report, to show Arroyo Grande Creek's live streamflow, water level and 7-day trend. It reads the USGS gauge directly, updates itself, and links back here.
See every free widget you can put on your site, including live conditions and a 7 day forecast.
