Little Juniata River at Spruce Creek, Pa.
Overview
- Station Id: 01558000
- County: Huntingdon
- Drainage Area: 220 sq.mi.
- Station Coordinates: 40.613°, -78.141°
- Elevation: 750.5 ft.
- Period of record: 10/11 to present
Location Description
Along Rt 45 upstream of Spruce Creek Road in Spruce Creek, Pa.
Data
- Data File Description
- LJAY.xlsx October 2022 to present
2021 Land Use
| Urban | Agricultural | Agricultural | Forested | Other | ||
|---|---|---|---|---|---|---|
| Row Crops | Pasture/Hay | Total | ||||
| 11% | 7% | 7% | 14% | 73% | 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 | |
| Spruce Creek 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 | 0.047477043 | 0.696078431 | L | UP | 0.006562401 | 0.578431373 | ALAN | NS |
| Nitrate-Nitrite | 0.152647981 | 0.892156863 | L | UP | 0.034848371 | 0.892156863 | L | UP |
| Ammonia | 0.003705948 | 0.754901961 | L | UP | 0.001087974 | 0.637254902 | ALAN | NS |
| Dissolved Nitrogen | 0.117797002 | 0.833333333 | L | UP | 0.022157510 | 0.735294118 | L | UP |
| Nitrate-Nitrite | 0.151041704 | 0.911764706 | VL | UP | 0.037556910 | 0.892156863 | L | UP |
| Ammonia | 0.000556236 | 0.578431373 | ALAN | NS | -0.000294492 | 0.500000000 | ALAN | NS |
| Total Phosphorus | -0.034181181 | 0.990196078 | HL | DWN | -0.007767346 | 0.833333333 | L | DWN |
| Particulate Phosphorus | -0.006292659 | 0.911764706 | VL | DWN | -0.000236101 | 0.519607843 | ALAN | NS |
| Dissolved Phosphorus | -0.026463486 | 0.990196078 | HL | DWN | -0.006440190 | 0.970588235 | HL | DWN |
| Orthophosphate | -0.028777683 | 0.990196078 | HL | DWN | -0.007288366 | 0.990196078 | HL | DWN |
| Total Organic Carbon | -0.633342274 | 0.970588235 | HL | DWN | -0.328257530 | 0.950980392 | HL | DWN |
| Total Suspended Solids | -6.279550528 | 0.735294118 | L | DWN | -2.764701503 | 0.519607843 | ALAN | NS |