Description of Site: The closest to the tailwaters of Stewart Mtn. Dam, this site is the most representative of water conditions immediately leaving the Salt River reservoir system.
11/02/99
Physico-chemical Parameters
Time | Turbidity (NTU's) | Temp (C) | DO (ppm) | DO (% sat.) | pH | TDS | Ammonia (mg/l) | Nitrate (mg/l) | Ortho-P (mg/l) | Sulfate (mg/l) | Dissolved Fe (mg/l) | Dissolved Mn (mg/l) | Chloride (mg/l) |
1500 | 2 | 21.6 | 11.38 | 129.2 | 8.45 | 875 | 0.22 | ND | ND | 50.9 | ND | ND | 287 |
TSS (mg/l) | Silica (mg/l) | Total N (mg/l) | Total P (mg/l) | Total Fe (mg/l) | Total Mn (mg/l) | TOC | DOC | UV254 | Chl a (mg/m3) | Pheophytin a (mg/m3) |
ND | 15.7 | 1.11 | 0.13 | 0.027 | 0.012 | 3.7 | 2.92 | NS | 0.352 | 0.324 |
Phytoplankton
Division | Genus | Units/mL |
Cyanophyta | Lyngbya | 80 |
Chlorophyta | Crucigenia | 80 |
Chlorophyta | Vacuolaria | 80 |
Chrysophtya | Cocconeis | 320 |
Chrysophyta | Cymbella | 160 |
Chrysophyta | Gomphonema | 160 |
Chrysophyta | Gyrosigma | 240 |
Periphyton
Division | Genus | Units/cm2 |
Cyanophyta | Lyngbya | 641,650 |
Chlorophyta | Chlamydomonas | 16,400 |
Chlorophtya | Cladophora | 155,800 |
Chrysophyta | Amphipleura | 10,250 |
Chrysophyta | Cocconeis | 24,600 |
Chrysophtya | Cymbella | 14,350 |
Chrysophyta | Gomphonema | 51,250 |
Chrysophyta | Gyrosigma | 8200 |
Chrysophyta | Melosira | 6150 |
Chrysophyta | Synedra | 49,200 |
Aquatic
Macro-Invertebrates (Presence/Absence)
Order | Family | Genus |
Ephemeroptera | Heptageniidae | Heptagenia |
Trichoptera | Hydropsychidae | Hydropsyche |