SNAP

Sherman Creek at Shermans Dale, Pa.

Overview
  • Station Id: 01568000
  • County: Perry
  • Drainage Area: 188 sq.mi.
  • Station Coordinates: 40.344°, -77.194°
  • Period of record: 10/84 to 12/89 & 10/04 to present
Location Description

Pisgah State Road bridge at Dromgold.

Data

2021 Land Use

Urban Agricultural Agricultural Forested Other
Row Crops Pasture/Hay Total
6% 13% 12% 25% 67% 1%
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.

Clear
2024 Flow Normalized Trends
Trend period (Water Year*) 2005-2024
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
Shermans Dale 2005-2024 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 0.0098691 0.7352941 L UP 0.0016357 0.5392157 ALAN NS
Nitrate-Nitrite -0.0458864 0.5196078 ALAN NS -0.0042230 0.5392157 ALAN NS
Ammonia -0.0140211 0.9901961 HL DWN -0.0056647 0.8921569 L DWN
Dissolved Nitrogen -0.0361091 0.5588235 ALAN NS -0.0146760 0.7352941 L DWN
Nitrate-Nitrite -0.0291171 0.5588235 ALAN NS 0.0020672 0.6372549 ALAN NS
Ammonia -0.0133341 0.9705882 HL DWN -0.0056280 0.8921569 L DWN
Total Phosphorus 0.0058847 0.8529412 L UP 0.0024283 0.5588235 ALAN NS
Particulate Phosphorus 0.0008383 0.5196078 ALAN NS 0.0006517 0.5392157 ALAN NS
Dissolved Phosphorus 0.0048675 0.8921569 L UP 0.0020155 0.6176471 ALAN NS
Orthophosphate 0.0010148 0.5196078 ALAN NS 0.0009758 0.5196078 ALAN NS
Total Organic Carbon -0.0463339 0.6764706 L DWN -0.1487609 0.8921569 L DWN
Total Suspended Solids -2.1253337 0.8333333 L DWN -2.7001525 0.7352941 L DWN
Suspended Sediment 2.2636552 0.7352941 L UP -5.3403404 0.9117647 VL DWN