Estimated Monthly Loads File Formation Information

Field Name                         Description
SITECODE                           Arbitrary site code based on the pool of the Upper Mississippi River that the tributary enters
AGENCY CODE                        Station identification code used by monitoring agency that collected concentration data
YEAR                               Year of load estimate
MONTH                              Month of load estimate
DISCHARGE (MILLIONS of M3/ MONTH)  Cumulative discharge of water for the site for the given month
TN_N1 (Metric Tons/Month)          Monthly load estimate of total nitrogen from the maximum likelihood of best-fit model
TN_N2 (Metric Tons/Month)          Monthly load estimate of total nitrogen from the linear attribution estimate of best-fit model
TN_N3 (Metric Tons/Month)          Monthly load estimate of total nitrogen from the least absolute deviation of best-fit model
NOx_N1 (Metric Tons/Month)         Monthly load estimate of nitrate + nitrite from the maximum likelihood of best-fit model
NOx_N2 (Metric Tons/Month)         Monthly load estimate of nitrate + nitrite from the linear attribution estimate of best-fit model
NOx_N3 (Metric Tons/Month)         Monthly load estimate of nitrate + nitrite from the least absolute deviation of best-fit model
NHx_N1 (Metric Tons/Month)         Monthly load estimate of total ammonia from the maximum likelihood of best-fit model
NHx_N2 (Metric Tons/Month)         Monthly load estimate of total ammonia from the linear attribution estimate of best-fit model
NHx_N3 (Metric Tons/Month)         Monthly load estimate of total ammonia from the least absolute deviation of best-fit model
TP_P1 (Metric Tons/Month)          Monthly load estimate of total phosphorus from the maximum likelihood of best-fit model
TP_P2 (Metric Tons/Month)          Monthly load estimate of total phosphorus from the linear attribution estimate of best-fit model
TP_P3 (Metric Tons/Month)          Monthly load estimate of total phosphorus from the least absolute deviation of best-fit model
SRP_P1 (Metric Tons/Month)         Monthly load estimate of soluble reactive phosphorus from the maximum likelihood of best-fit model
SRP_P2 (Metric Tons/Month)         Monthly load estimate of soluble reactive phosphorus from the linear attribution estimate of best-fit model
SRP_P3 (Metric Tons/Month)         Monthly load estimate of soluble reactive phosphorus from the least absolute deviation of best-fit model
TSS1 (Metric Tons/Month)           Monthly load estimate of total suspended solids from the maximum likelihood of best-fit model
TSS2 (Metric Tons/Month)           Monthly load estimate of total suspended solids from the linear attribution estimate of best-fit model
TSS3 (Metric Tons/Month)           Monthly load estimate of total suspended solids from the least absolute deviation of best-fit model
CL1 (Metric Tons/Month)            Monthly load estimate of chloride from the maximum likelihood of best-fit model
CL2 (Metric Tons/Month)            Monthly load estimate of chloride from the linear attribution estimate of best-fit model
CL3 (Metric Tons/Month)            Monthly load estimate of chloride from the least absolute deviation of best-fit model
SiO2_Si1 (Metric Tons/Month)       Monthly load estimate of silicate silica from the maximum likelihood of best-fit model
SiO2_Si2 (Metric Tons/Month)       Monthly load estimate of silicate silica from the linear attribution estimate of best-fit model
SiO2_Si3 (Metric Tons/Month)       Monthly load estimate of silicate silica from the least absolute deviation of best-fit model