SNAP

Chemung River at Chemung, NY

Overview
  • Station Id: 01531000
  • County: Chemung
  • Drainage Area: 2,507 sq.mi.
  • Station Coordinates: 42.003°, -76.635°
  • Period of record: 10/04 to present
  • Elevation: 779 ft.
Location Description

Station is located on the bridge 0.76 miles southwest of Chemung on Route 3.

Data

2016 Land Use

Urban Agricultural Agricultural Forested Other
Row Crops Pasture/Hay Total
7% 5% 23% 28% 61% 4%
Site Drainage Area

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Clear
2019 Flow Normalized Trends
Trend period (Water Year*) 2005-2019
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
Chemung 2005-2019 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 0.078 0.62 ALAN NS 0.041 0.60 ALAN NS
Nitrate-Nitrite 0.103 0.77 L UP 0.041 0.60 ALAN NS
Ammonia -0.010 0.93 VL DOWN -0.044 0.91 VL DOWN
Dissolved Nitrogen -0.004 0.72 L DOWN -0.134 0.89 L DOWN
Nitrate-Nitrite 0.046 0.64 ALAN NS 0.009 0.56 ALAN NS
Ammonia -0.015 0.93 VL DOWN -0.054 0.93 VL DOWN
Total Phosphorus -0.065 0.99 HL DOWN -0.169 0.99 HL DOWN
Particulate Phosphorus -0.020 0.99 HL DOWN -0.064 0.85 L DOWN
Dissolved Phosphorus -0.040 0.95 HL DOWN -0.077 0.99 HL DOWN
Orthophosphate -0.043 0.93 VL DOWN -0.074 0.99 HL DOWN
Total Organic Carbon -0.060 0.66 ALAN NS 0.457 0.79 L UP
Total Suspended Solids 3.311 0.66 ALAN NS 82.704 0.77 L UP
Suspended Sediment 0.622 0.62 ALAN NS 42.823 0.68 L UP