Model Form #1
log10(SSR) =
0.368 - 0.0995 log10(Q)
+ 0.947 log10(TURB)
where:
- SSR is computed suspended sediment, in milligrams per liter
- Q is computed discharge, stage-discharge rating curve, in cubic feet per second
- TURB is turbidity, YSI model 6136, in formazin nephelometric units
Model Archive Summary
The model archive summary for computed suspended sediment can be viewed in pdf form here.
Model Calibration
Basic Data
| Number of measurements: | 32 |
|---|---|
| Mean squared error: | 0.020736 |
| Multiple R2: | 0.954 |
| Bias correction (smearing) factor: | 1.05 |
Explanatory Variables
| Variable | Value | Standard error |
|---|---|---|
| Intercept | 0.368 | 0.0552 | log10(Q) | -0.0995 | 0.0489 | log10(TURB) | 0.947 | 0.0609 |
Correlation Matrix
| Intercept | log10(Q) | log10(TURB) | |
|---|---|---|---|
| Intercept | 1 | 0.3005 | -0.7229 |
| log10(Q) | 0.3005 | 1 | -0.821 |
| log10(TURB) | -0.7229 | -0.821 | 1 |
Reference
- Downhour, M.S., Bunch, A.R., and Lathrop, T.R., 2021, Regression models for estimating sediment, nutrient concentrations and loads at School Branch at Brownsburg, Indiana, June 2015 through February 2019: U.S. Geological Survey Scientific Investigations Report 2021-5099, 15 p.