SNAP

West Branch Susquehanna River at Karthaus, Pa.

Overview
  • Station Id: 01542500
  • County: Clearfield
  • Drainage Area: 1,391 sq.mi.
  • Station Coordinates: 41.117°, -78.109°
  • Period of record: 10/04 to present
Location Description

Water quality samples are collected off the Route 879 bridge located on the eastern side of Karthaus.

Data

2021 Land Use

Urban Agricultural Agricultural Forested Other
Row Crops Pasture/Hay Total
7% 2% 10% 12% 75% 6%
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
2023 Flow Normalized Trends
Trend period (Water Year*) 2005-2023
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
Karthaus 2005-2023 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 0.0296766 0.8333333 L UP 0.1860245 0.9705882 HL UP
Nitrate-Nitrite 0.0081134 0.5392157 ALAN NS 0.1739227 0.9901961 HL UP
Ammonia -0.0267807 0.9901961 HL DWN -0.0509901 0.9901961 HL DWN
Dissolved Nitrogen -0.0204784 0.6960784 L DWN 0.0662522 0.8529412 L UP
Nitrate-Nitrite 0.0182269 0.7352941 L UP 0.1832778 0.9901961 HL UP
Ammonia -0.0257607 0.9901961 HL DWN -0.0531600 0.9901961 HL DWN
Total Phosphorus -0.0179894 0.9901961 HL DWN -0.0316122 0.9705882 HL DWN
Particulate Phosphorus -0.0101975 0.9901961 HL DWN -0.0186570 0.9705882 HL DWN
Dissolved Phosphorus -0.0115727 0.9901961 HL DWN -0.0173268 0.9901961 HL DWN
Orthophosphate -0.0083789 0.9901961 HL DWN -0.0125570 0.9901961 HL DWN
Total Organic Carbon 0.0180234 0.5000000 ALAN NS -0.0448048 0.5000000 ALAN NS
Total Suspended Solids -0.1426653 0.5000000 ALAN NS 3.2192258 0.5392157 ALAN NS
Suspended Sediment 14.7754341 0.9509804 HL UP 43.8418851 0.8725490 L UP