Dog River at Mouth of Robinson Bayou
Mobile, Alabama, United States
This site normally has a 36"-24" high tide rise above the low tide every day. River Depth can run 3'-12' within 300' of site. Water velocity is about 2 mph when the tide is running. This site is a brackish transition zone (fresh and salt water), depending upon the daily rainfall, wind, storms, and tides. The water is very salty in drought conditions. It is fresh when there is a lot or rainfall. There are a lot of species (red fish, speckled trout, crabs, manatee, catfish, bait fish,alligator gars, alligators, brown pelicans, osprey, bald eagles, migratory birds) which inhabit or migrate through this area. Porpoise were seen from this site in early summer 2017. Flora and fauna may be changing from fresh to salt due to salt water intrusion due to the ocean rise. The marsh around cypress trees is eroding due to boat traffic. Cypress trees in marshes are slowly dying (5-7 trees in 4-5 years). Flora and fauna may be changing from fresh to salt due to salt water intrusion due to the ocean rise. Bacteria (e-coli) warnings occur during heavy rainfalls due to sanitary sewers overflowing upstream.
Location created by
David Strain
- Group: Dog River : Dog River Clearwater Revival
- Lat: 30.6108979
- Lng: -88.0880356
- Waterbody Type: River
- Timezone: America/Chicago
Latest photos
High tide. Sunny with some clouds. SW wind 1-2 mph.
Salinity at 18" below surface 0% and 12" above bottom 0%. 0,1 inches of rain the last 7 days.
Sampleswere taken at 18 inches below the surface and 12 inches from the bottom. Both samples had 0.0 PPT salinity (no salinity) using a refractometer.
The tide was high. The wind was strong out of the south-east earlier today.
Beautiful day. No rain for 3 days. 3"-4" of rain in previous 2-3 days. Tide differential 0.7'. Observation at high tide (medium high). Almost record high temperatures the last 3 days."
0.0 ppt salinity 18" from surface and 6" from bottom.
Small 1/2" bait fish are plentiful.
A neighbor reported seeing an otter last week adjacent the observation site.
Saw a bald eagle yesterday.
Gray sky. Drizzling rain, 3.87" of rain in the last 4 days. 1.3" of rain in the 24 hours prior to observation. Medium tide level with an incoming tide.
Salinity at 18" below surface and 6" from bottom were both 1 ppt using a remote sampler.
Salinity at 6" and 18" from top using a remote sampler was 7 PPT.
Salinity 6" from bottom was 8.5 PPT.
Sunny. 0.66 inches of rain 3 days prior.
Observation was at low tide.
No rain for several days. Warming trend, but cold front and rain later today. Cloudy. Wind 1mph out of SE. 6-7 pelicans visible. Measurement at high tide as the tide was coming in slow and 10 minutes later tide was going out fast (2-3 mph).
No rain for 5 previous days. Cold Front for several days.
Air Temp:
Low: -6.7 degrees celsius/20 degrees Fahrenheit at night
High: 0 degrees Celsius/32 degrees Fahrenheit
Refractometer readings:
Salt 2.5 PPT at top of water. Salt 7.0 PPT 6" from bottom of river.
Cloudy. 0.2" of rain yesterday.
Salinity using Portable Refractometer measured at two depths:
At surface: 2.5 PPT
Using a remote sampler, 0.15 m from bottom ~ 1.4 m deep: 7.0 PPT