Adirondack Lakes Survey Corporation

July 16, 2001

Summer Surface Chemistry Data

Reported water chemistry data are from the intensive water chemistry survey conducted between the months of July and August from 1984 - 1987. This intensive sampling took place in the summer because Adirondack waters are typically stratified at this time. When possible, the middle or deepest part of the lake was sampled to avoid the effects of littoral zones and inlet streams. Samples in homothermous waters were collected 1.5 meters below the surface or at mid-depth when the waters were less than 1.5 meters deep. In stratified waters, a sample was collected at 1.5 meters below the surface and also half way between the thermocline and the bottom. Chemical analysis took place at the ALSC laboratory in Ray Brook following EPA guidelines. The list below describes the chemical parameters analyzed and the their units of concentration:

Parameter Units
SO4 mg/L
NO3 mg/L
Cl mg/L
F mg/L
ANC (acid neutralizing capacity) meq/L
DIC (dissolved inorganic carbon) mg/L
DOC (dissolved organic carbon) mg/L
Total P1 (phosphorus) mg/L
SiO2 mg/L
Ca mg/L
Mg mg/L
Na mg/L
K mg/L
NH4 mg/L
Al mg/L
Fe mg/L
Mn mg/L
Pb mg/L
Zn mg/L
Air eq pH (air equilibrated)  
Trucolor Pt-Co
Conductivity mmhos/L

Location Information
Ponds can be mapped by using the UTM (UTMN27,UTME27 or UTMN83,UTME83) values given in the table or linked to watershed coverages based on pond numbers. The accuracy could possibly be off by at a minimum of 1 to 99 meters because the values were converted from NYTM (New York Transverse Mercator), which use two fewer digits.