Table 9. Selected water-quality data for the Cuivre River near Troy at gage station #05514500, water years 1974 and 1990 (USFS 1974; USGS 1990; Code of State Regulations 10 CSR 20.7
| Parameter |
State Standard |
Water Year |
| I |
III |
VI |
VII |
1974 |
1990 |
| Temperature (oF) |
90o max |
|
|
|
32-79 |
34-79 |
| Specific Conductance (us/cm) |
|
|
|
|
248-440 |
361-462 |
| Ph |
|
|
|
|
7.3-7.9 |
7.6-8.0 |
| Turbidity (NTU) |
|
|
|
|
|
2.5-31 |
| Sediment, suspended (mg/L) |
|
|
|
|
|
29-50 |
| Oxygen, dissolved (mg/L) |
5 |
|
|
|
6.9-12.6 |
4.5-13.1 |
| Coliform, fecal (colonies/100 ml) |
|
|
200 non-storm runoff |
60-1400 |
<4-K710 |
| Streptococci, fecal (colonies/100 ml) |
|
|
|
|
20-550 |
<4-180 |
| Total Hardness (mg/L CaCO3 |
|
|
|
|
120-200 |
170-220 |
Table 9. Selected water-quality data for the Cuivre River near Troy at gage station #05514500, water years 1974 and 1990 (USFS 1974; USGS 1990; Code of State Regulations 10 CSR 20.7).
| Parameter |
State Standard |
Water Year |
| I |
III |
VI |
VII |
1974 |
1990 |
| Nitrogen, Total Ammonia (mg/L as N) |
1.4 chronic level at this temp & Ph |
|
|
0-0.16 |
0.01-0.14 |
|
| Phosphorus, Total (mg/L as P) |
|
|
|
0.07-0.26 |
0.06-0.47 |
|
| Manganese, dissolved (ug/L as Mn) |
|
50 |
|
50 |
190-490 |
84-610 |
|
|
|
| Fluoride, dissolved (mg/L as F) |
|
2.2 |
|
2.2 |
0.1-0.3 |
<0.01-0.04 |
K: Non-ideal count of colonies (e.g., sample was not diluted enough, colonies merged)
I: Protection of aquatic life
III: Drinking water supply
VI: Whole-body-contact recreation
VII:Groundwater
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