Frankstown Branch Juniata River at Williamsburg, Pa.
Overview
- Station Id: 01556000
- County: Blair
- Drainage Area: 291 sq.mi.
- Station Coordinates: 40.463°, -78.200°
- Elevation: 831.8 ft.
- Period of record: 10/11 to present
Location Description
High Street bridge in Williamsburg, Pa.
Data
- Data File Description
- FRA.xlsx October 2022 to present
2021 Land Use
| Urban | Agricultural | Agricultural | Forested | Other | ||
|---|---|---|---|---|---|---|
| Row Crops | Pasture/Hay | Total | ||||
| 15% | 9% | 10% | 19% | 64% | 2% | |
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
2024 Flow Normalized Trends
| Trend period (Water Year*) | 2022-2024 |
|---|---|
| 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 | |
| Williamsburg 2022-2024 | 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 | 0.313419917 | 0.970588235 | HL | UP | 0.031157016 | 0.676470588 | L | UP |
| Nitrate-Nitrite | 0.399228199 | 0.970588235 | HL | UP | 0.093759604 | 0.950980392 | HL | UP |
| Ammonia | -0.020986198 | 0.990196078 | HL | DWN | -0.011400438 | 0.990196078 | HL | DWN |
| Dissolved Nitrogen | 0.351248496 | 0.970588235 | HL | UP | 0.062800981 | 0.872549020 | L | UP |
| Nitrate-Nitrite | 0.320680480 | 0.872549020 | L | UP | 0.077740316 | 0.872549020 | L | UP |
| Ammonia | -0.023590638 | 0.990196078 | HL | DWN | -0.013871484 | 0.990196078 | HL | DWN |
| Total Phosphorus | -0.038631379 | 0.970588235 | HL | DWN | -0.016713492 | 0.990196078 | HL | DWN |
| Particulate Phosphorus | -0.018464605 | 0.990196078 | HL | DWN | -0.009931135 | 0.990196078 | HL | DWN |
| Dissolved Phosphorus | -0.017892127 | 0.950980392 | HL | DWN | -0.006269016 | 0.950980392 | HL | DWN |
| Orthophosphate | -0.026365238 | 0.970588235 | HL | DWN | -0.006568438 | 0.970588235 | HL | DWN |
| Total Organic Carbon | -1.353645932 | 0.990196078 | HL | DWN | -0.690441399 | 0.970588235 | HL | DWN |
| Total Suspended Solids | -14.342272880 | 0.970588235 | HL | DWN | -14.432003170 | 0.892156863 | L | DWN |