West Branch Susquehanna River at Lewisburg, Pa.
Overview
- Station Id: 01553500
- County: Union
- Drainage Area: 6,825 sq.mi.
- Station Coordinates: 40.967°, -76.879°
- Period of record: 10/84 to present
Location Description
The sampling location is on the Market Street bridge with the gage located on the east bank next to the Market Street bridge abutment on the downstream side.
Data
- Data File Description
- LEW.xlsx October 1984 to present
2021 Land Use
| Urban | Agricultural | Agricultural | Forested | Other | ||
|---|---|---|---|---|---|---|
| Row Crops | Pasture/Hay | Total | ||||
| 6% | 4% | 8% | 12% | 79% | 4% | |
Site Drainage Area
Please select a parameter from the list to view graphs of loads and concentrations. You may need to scroll down to view graphs.
Loads
Concentrations
Data
2023 Flow Normalized Trends
| Trend period (Water Year*) | 1985-2023 |
|---|---|
| Trend & Direction | NS – Not significant, UP – Increasing trend, DOWN – Decreasing trend |
| Hypothesis Test significance level (i.e. α) | 0.1 |
| * Water Year runs from October 1st to September 30th of the following year | |
| Likelihood Descriptor | Range of values** |
|---|---|
| HL (Highly Likely) | ≥0.95 and ≤1.00 |
| VL (Very Likely) | ≥0.90 and <0.95 |
| L (Likely) | ≥0.66 and <0.90 |
| ALAN (About as Likely as Not) | >0.33 and <0.66 |
| ** Values represent the posterior mean estimate of the probability of a trend | |
| Lewisburg 1985-2023 | Flow Normalized Concentration (mg/L) | Flow Normalized Load (Millions Kg/yr) | ||||||
|---|---|---|---|---|---|---|---|---|
| Likelihood Test | Likelihood Test | |||||||
| Parameter | Change | Value | Descriptor | Trend | Change | Value | Descriptor | Trend |
| Total Nitrogen | -0.5334595 | 0.9901961 | HL | DWN | -4.9084773 | 0.9901961 | HL | DWN |
| Nitrate-Nitrite | -0.1583972 | 0.9901961 | HL | DWN | -0.8662607 | 0.9705882 | HL | DWN |
| Ammonia | -0.0457047 | 0.9901961 | HL | DWN | -0.4228170 | 0.9901961 | HL | DWN |
| Dissolved Nitrogen | -0.3876197 | 0.9901961 | HL | DWN | -3.3581537 | 0.9901961 | HL | DWN |
| Nitrate-Nitrite | -0.1909282 | 0.9901961 | HL | DWN | -1.1056216 | 0.9705882 | HL | DWN |
| Ammonia | -0.0392695 | 0.9901961 | HL | DWN | -0.3878470 | 0.9901961 | HL | DWN |
| Total Phosphorus | -0.0379565 | 0.9901961 | HL | DWN | -0.2239509 | 0.9901961 | HL | DWN |
| Particulate Phosphorus | -0.0124875 | 0.9901961 | HL | DWN | 0.0195182 | 0.5980392 | ALAN | NS |
| Dissolved Phosphorus | -0.0290332 | 0.9901961 | HL | DWN | -0.2672996 | 0.9901961 | HL | DWN |
| Orthophosphate | -0.0097627 | 0.9901961 | HL | DWN | -0.0431135 | 0.9705882 | HL | DWN |
| Total Organic Carbon | -0.4849430 | 0.9705882 | HL | DWN | -3.2337343 | 0.7941176 | L | DWN |
| Total Suspended Solids | -6.9245550 | 0.8921569 | L | DWN | -73.6459073 | 0.6176471 | ALAN | NS |
| Suspended Sediment | -9.1580706 | 0.9901961 | HL | DWN | -113.0547834 | 0.8529412 | L | DWN |