Description:
Smith Creek is located in the upper region of the Memramcook River Watershed, West of Route 2. The Smith Creek watershed covers an area of approximately 20 km².
Physical Habitat:
In its lower section (between Old Shediac Road and Sifroid Road), the physical habitat of Smith Creek is characterized by a rocky bottom, with the presence of sediment and organic matter. In this portion, the area surrounding Smith Creek is mainly open, aside from a group of shrubs relatively dense longing the Creek. A bit higher in this section, the creek widens to form a sort of vast pond.
In the central section, starting from Ruffin St., the physical habitat of Smith Creek is characterized by a very nice rocky bottom, several sections of pebbles along its course, and very little fine sediment. We must notice that the rocky materials (quartzy sandstone, polygenic conglomerates, quartz pebble conglomerates, and red shale) present here are different than those observed in any other water course in the watershed. In this portion, the water course has a width of approximately 20 to 25 feet, its flow is good and several deep trenches are present. A beaver dam is seen along the creek. The area surrounding the water course is mainly wooded and the trees are majoritarily leafy. All along this section, we have spotted several small fish, including a few trout, certain measuring approximately 8 inches.Upstream of Smith Creek, we find Lake Folly, that is a eutrophic lake, covering an area of 0.19 km².
Possible Pollution Sources
A few erosion signs were observed on both banks at the end of the small bridge at Armour Bridge, as well as at the end of the small bridge beneath the Old Shediac Road. During floods, the water must exit the small bridge with great pressure and swirl around, thus eroding the banks. Higher in the course of the creek, there have been no important signs of erosion noticed aside from a small section. However, the bridge crossing the creek at the point N46.03185 W64.59009 rests directly on the bed of the creek. Finally, a few houses are under construction in the Lake Folly region.
Water Quality
At first glance, the water samples gathered (2001-2002) seem to indicate that the water quality of Smith Creek ranges from good to very good. In fact, for the section included between the PWMG 71 and PWMG 75 sites, the average E-coli rate was of 383.3 MPN/100mL and the average dissolved oxygen rate was of 8.35 mg/L. These results may have possibly been influenced by the infiltration of salt water in the proximity. Consequently, considering the average E-Coli rate and despite the fact that this rate is slightly higher than the standard for class B (200 MPN/100 mL), we believe that class B is nonetheless appropriate for the moment. For the section upstream of the PMWG 75 site, the average E-Coli rate was of 30.0 MPN/100 mL et the average dissolved oxygen rate was of 7.87mg/L. Furthermore, we have spotted the presence of trout on several occasions, which seems to be another good indicator of the water quality. Consequently, considering these rate, as well as the minimal impact from human activity in this sector, class A seems appropriate. Finally, it seems that the local community agrees with the categories proposed and will attempt to maintain the water quality of Smith Creek.
Water quality highlights of Breau Creek
|
Section |
Principal water quality influences |
Water quality highlights 1997-2001 |
|
Armour bridge (PWMG 71) |
Infiltration possible d'eau salée |
Cadmium**, Dissolved Oxygen, E-coli, Iron, Hardness, Ammonia |
Near Sifroid Rd. (PWMG 75) |
|
Aluminum, Dissolved Oxygen, E-coli, Iron, Hardness, Total Organic Carbon |
**Given that the level of detection of Cadmium is superior to Canadian standards relative to water quality, Cadmium appears in the highlights when detected, but is not generally in any way
elevated.
Recommended Preliminary Classification
Class B : between PWMG 71 and PWMG 75
Class A : upstream of PWMG 75
Classification already in effect
Class AL : Lake Folly
Recommended Actions
>> Preserve the banks and wooded areas surrounding Smith Creek.
>> See that the forestry activities observed near PWMG 75 site do not harm the water quality of the creek in the future.
>> See that the wooden bridge crossing the creek at the end of Sifroid Road be arranged differently in order that it does not hinder water and fish passage.