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2005 Research Data: Lakes

Code* SRP05071301 SRP05071502b SRP05071602 SRP05071702c SRP05071702d SRP05072102
GPS N 49.63456 50.6231 50.6002 50.51523 50.51523 49.90643
GPS E 102.64865 101.87375 101.51431 101.21074 101.21074 99.39368
Elevation m 937 1152 1137 1220 1220 1856
Site Name Airhan Nuur Oxbow on Uilgan Gol Oxbow Lake Oxbow near Khalkhan Gol Oxbow near Khalkhan Gol Salt lake
Aimag Bulgan Hovsgol Hovsgol Hovsgol Hovsgol Hovsgol
Soum Khutag-Ondor Tsagaan-Uur Tsagaan-Uur Chandmani-Ondor Chandmani-Ondor Arbulag
Location Description** North Shore of Airhan Nuur Oxbow on Uilgan Gol 26 km ENE of Tsagaan-Uur Oxbow Lake 6.85 km N of Tsagaan-Uur Oxbow near Khalkhan Gol 19.38 km E of Chandmani-Ondor Oxbow near Khalkhan Gol 19.38 km E of Chandmani-Ondor Salt lake, ca. 3 km N. Arbulag
Click on Site Photograph to enlarge
SRP05071301ED
SRP05071502ED
SRP05071602ED
SRP05072102ED
Date 7/13/2005 7/15/2005 7/16/2005 7/17/2005 7/17/2005 7/21/2005
Lake type Closed Basin, Saline Oxbow Oxbow Oxbow Oxbow Closed Basin, Saline
Water temp deg C 27.6 16 23.9 5.6 9.4 21.3
Conductivity uS/cm 3786 199 1.8 146 150 244.2
DO ppm 10.24 6.65 15.4 2.59 3.16 10.4
DO % Saturation 130.7 73 unreadable 20.2 27.3 118.3
TDS (ATC) ppm 1903 105 90 73 78 1072
Turbidity NTU ND ND ND 0.8 2.2 10.1
pH 9.7 ND 8.86 7.45 7.51 9.71
Phosphate mg/L 3.28 ND ND 0.11 ND 0.31
Nitrate (NO3-N) mg/L 1.2 ND ND 0.08 ND 0.68
Dominant Substrate Silt Silt Silt Silt Silt Silt
Watershed Characterization: Estimate from outer banks to 1 km out
% Forest 0 30 10 40 40 0
% Shrubs 0 15 10 20 20 0
% Forbs 40 40 60 20 20 50
% Grasslands 40 15 20 20 20 50
% Other 20 WHEATFIELDS 0 0 0 0 0
Landuse in Watershed:  Estimate from outer banks to 1 km out
% Grazing 40 70 40 50 50 60
% Town 0 0 0 0 0 20
% Ger 20 10 10 10 10 20
% Mining 0 0 0 0 0 0
% Natural 20 20 40 40 40 0
% Other 20 WHEATFIELDS 0 0 0 0 0
Channel Characterization:  Left Descending Bank, Estimate from stream to highest outer bank
% Forest NA NA NA NA NA NA
% Shrubs NA NA NA NA NA NA
% Forbs NA NA NA NA NA NA
% Grasslands NA NA NA NA NA NA
% Other NA NA NA NA NA NA
Channel Characterization:  Right Descending Bank, Estimate from stream to highest outer bank
% Forest NA NA NA NA NA NA
% Shrubs NA NA NA NA NA NA
% Forbs NA NA NA NA NA NA
% Grasslands NA NA NA NA NA NA
% Other NA NA NA NA NA NA
Estimates of Grazing and Erosion
Grazing** 2 2 1 2 2 4
Erosion in Watershed*** 1 1 1 2 2 3
Erosion in Stream Channel**** NA NA NA NA NA NA

Notes:
DUNG PILED UP
NA=Not Applicable
ND = No Data
* Code = Selenge River Project (SRP) followed by two digits for year, two digits for month and two digits for day and two digits for site number sequence for that day.
** = distance almost always based on GPS calculation as straight line distance
***Grazing Codes: 0=no grazing evident; 1=slight grazing; 2=moderate grazing; 3=heavy/mixed grazing; 4=heavy grazing.
****Erosion in Watershed Codes: 0=no erosion evident; 1=slight erosion; 2=moderate erosion; 3=heavy/mixed erosion; 4=heavy erosion.
*****Erosion in Watershed Codes: 0=no erosion evident; 1=slight erosion; 2=moderate erosion; 3=heavy/mixed erosion; 4=heavy erosion.

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