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
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
Karthaus 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 -0.0035157 0.5784314 ALAN NS 0.0308486 0.6764706 L UP
Nitrate-Nitrite -0.0275807 0.8921569 L DWN 0.0623295 0.7352941 L UP
Ammonia -0.0304604 0.9901961 HL DWN -0.0642050 0.9901961 HL DWN
Dissolved Nitrogen -0.0467227 0.8921569 L DWN -0.0298056 0.6176471 ALAN NS
Nitrate-Nitrite -0.0177444 0.8529412 L DWN 0.0721495 0.7745098 L UP
Ammonia -0.0274327 0.9901961 HL DWN -0.0605397 0.9901961 HL DWN
Total Phosphorus -0.0184314 0.9901961 HL DWN -0.0365482 0.9901961 HL DWN
Particulate Phosphorus -0.0112659 0.9901961 HL DWN -0.0255518 0.9901961 HL DWN
Dissolved Phosphorus -0.0109657 0.9901961 HL DWN -0.0154379 0.9901961 HL DWN
Orthophosphate -0.0088531 0.9901961 HL DWN -0.0139237 0.9901961 HL DWN
Total Organic Carbon 0.0290551 0.5196078 ALAN NS -0.0731296 0.6372549 ALAN NS
Total Suspended Solids -1.8829278 0.8137255 L DWN -8.3744774 0.8137255 L DWN
Suspended Sediment 8.3074220 0.7549020 L UP 11.2559558 0.5980392 ALAN NS