Roosevelt/Tonto 2 (RT2) 

Description of Site: This site is closer to Roosevelt dam than RT1 and represents the transition zone (the zone between the lacustrine and riverine zone) of the Tonto Creek Arm of Roosevelt Lake.
GPS Coordinates: 330 44.35 N   1110 11.83 W

3/20/00

Physico-chemical Parameters
Time Depth (m) Temp (C) pH SpCond Salinity (ppt) D.O. (%sat) D.O. (mg/l) Turbidity (NTU's)
937:47 -0.2 14.93 8.94 1440 0.8 101.1 10.14 3.3
935:20 -6.6 13.86 8.77 1394 0.7 94.8 9.69 20.4

 
Depth (m) Ammonia (mg/l) Nitrate (mg/l) TKN (mg/l) Ortho P (mg/l) Total P (mg/l) Sulfate (mg/l) Chloride (mg/l))
-0.2 0.05 0.18 1.9 ND 0.04 71.6 447
-6.6 0.05 0.18 1.5 ND 0.06 71.6 447

 
Depth (m) Dissolved Fe (mg/l) Dissolved Mn (mg/l) Total Fe (mg/l) Total Mn (mg/l) Silica (mg/l) TSS  Chl a (mg/m3) Pheophytin a (mg/m3)
-0.2 0.019 ND 0.093 ND 17.0 ND 0.912 0.508
-6.6 0.019 ND 0.093 ND 17.0 ND ND ND

Secchi Depth 1.7m

Phytoplankton
-0.2 meters
Division Genus Units/ml
Chlorophyta Crucigenia 80
Chlorophyta Scenedesmus 80
Chlorophtya Thoracomonas 320
Chrysophyta Nitzchia 160
Chrysophyta Cyclotella 80
Cyanophyta Chroococcus 160
Cryptophyta Cryptomonas 240
Pyrrophyta Glenodidium 400
Euglenophyta Trachelomonas 160

Results from 2/7/00