Table 3. Trace element concentrations, Comal Springs riverine system, New Braunfels, Texas, 1993–94
[Constituents not detected include beryllium, cadmium, chromium, cobalt, copper, mercury, molybdenum, nickel, silver, and vanadium. µg/L, micrograms per liter; <, less than; ft3/s, cubic feet per second]
|
Constituent |
New Channel | Comal River1 | ||||||
| Site A | Site B | Site E | ||||||
| Summer (9/20/93) | Winter (2/3/94) | Summer (9/20/93) | Winter (2/3/94) | Summer (9/20/93) | Winter (2/3/94) | |||
| Arsenic, dissolved |
<1 |
<1 | <1 | <1 | <1 | <1 | ||
| Barium, dissolved | 51 | 51 | 52 | 51 | 52 | 51 | ||
| Iron, dissolved | <3 | <3 | <3 | <3 | 3 | <3 | ||
| Lead, dissolved |
<10 |
<10 | 10 | <10 | <10 | <10 | ||
| Lithium, dissolved | 7 | 6 | 8 | 6 | 7 | 7 | ||
| Manganese, dissolved | <1 | <1 | <1 | <1 | <1 | <1 | ||
| Selenium, dissolved | 1 | <1 | 1 | <1 | 1 | <1 | ||
| Strontium, dissolved | 610 | 610 | 620 | 620 | 610 | 620 | ||
| Zinc, dissolved | 3 | <3 | <3 | 5 | <3 | <3 | ||
| Constituent (µg/L) |
Old Channel | Comal River1 | ||||||
| Site C | Site D | Site E | ||||||
| Summer (8/20/93) | Winter (3/3/94) | Summer (8/20/93) | Winter (3/3/94) | Summer (8/20/93) | Winter (3/3/94) | |||
| Arsenic, dissolved | <1 | 2 | <1 | 1 | <1 | 1 | ||
| Barium, dissolved | 51 | 55 | 53 | 55 | 49 | 51 | ||
| Iron, dissolved | 3 | <3 | 4 | <3 | <3 | <3 | ||
| Lead, dissolved | <10 | 10 | <10 | 10 | <10 | <10 | ||
| Lithium, dissolved | 12 | 8 | 13 | 8 | 12 | 8 | ||
| Manganese, dissolved | 2 | 2 | 5 | 4 | <1 | 2 | ||
| Selenium, dissolved | <1 | <1 | <1 | <1 | <1 | 1 | ||
| Strontium, dissolved | 620 | 670 | 650 | 690 | 600 | 640 | ||
| Zinc, dissolved | 6 | <3 | 4 | <3 | <3 | 5 | ||
1 Daily mean flow, 08169000 Comal River at New Braunfels: 350 ft3/s - 8/20/93, 339 ft3/s - 9/20/93, 351 ft3/s - 2/3/94, 337 ft3/s - 3/3/94.
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