Overview
  • Station Id: 01573560
  • County: Dauphin
  • Drainage Area: 484 sq.mi.
  • Station Coordinates: 40.287°, -76.678°
  • Period of record: 10/84 to 12/89 & 10/04 to present
Location Description
10/84-12/89 - Station is located at a bridge 0.7 miles downstream of Route 39 bridge and approximately 100 feet upstream of the confluence of Spring Creek and Swatara Creek bridge near Union Deposit. Gage is located on east bank, 0.5 miles upstream of Route 39 bridge.
Data
2000 Land Use
Urban Agricultural Forested Other
Urban Agricultural Forested Other
Row Crops Pasture/Hay Total
9% 32% 12% 44% 45% 2%
Site Drainage Area

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2015 Flow Normalized Trends

Trend period (Water Year) 2004-2015
FNC (Flow Normalized Concentration) (mg/L) FNC Slope – mg/L/yr
FNF (Flow Normalized Flux) 10^6 kg/yr FNF Slope – 10^6 kg/yr/yr
Trend & Direction NS – Not significant,  UP – Increasing trend,  DOWN – Decreasing trend
SMK – Seasonal Mann-Kendall for flow trends, alpha level 0.05
FNC/FNF alpha level 0.1
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
Parameter/code Trend Test Change Slope % Change Over the Period of Record Hypothesis Test Likelihood Test
P-value Trend Value Descriptor Direction
TN / 600 FNC -1.07 -0.11 -24 <0.05 Down 0.99 HL Down
FNF -0.5365 -0.054 -18 <0.05 Down 0.99 HL Down
TNOx / 630 FNC -1.14 -0.11 -27 <0.05 Down 0.99 HL Down
FNF -0.659 -0.066 -24 <0.05 Down 0.99 HL Down
TON / 605 FNC 0.0264 0.0026 7.5 0.48 NS 0.76 L Up
FNF 0.1477 0.015 45 0.40 NS 0.79 L Up
TNH3 / 610 FNC 0.0003 0.00003 0.57 0.78 NS 0.61 ALAN Up
FNF 0.0253 0.0015 27 0.57 NS 0.71 L Up
DN / 602 FNC -1.11 -0.11 -25 <0.05 Down 0.99 HL Down
FNF -0.592 -0.059 -20 <0.05 Down 0.99 HL Down
DNOx / 631 FNC -1.11 -0.11 -27 <0.05 Down 0.99 HL Down
FNF -0.615 -0.062 -23 <0.05 Down 0.99 HL Down
DON / 607 FNC -0.0845 -0.0084 -24 0.17 NS 0.92 VL Down
FNF 0.0104 0.001 4.3 0.83 NS 0.59 ALAN Up
DNH3 / 608 FNC 0.0099 0.00099 19 0.34 NS 0.84 L Up
FNF 0.02161 0.0022 41 0.20 NS 0.89 L Up
TP / 665 FNC 0.0051 0.00051 7.8 0.66 NS 0.662 L Up
FNF 0.0286 0.0029 29 0.22 NS 0.89 L Up
DP / 666 FNC 0.00053 0.00005 1.3 0.87 NS 0.56 ALAN Up
FNF 0.0098 0.00098 25 0.23 NS 0.89 L Up
DOP / 671 FNC 0.00192 0.00019 6 0.41 NS 0.79 L Up
FNF 0.00897 0.0009 28 0.38 NS 0.81 L Up
TOC / 680 FNC 0.191 0.019 7.2 0.52 NS 0.74 L Up
FNF 0.6889 0.069 22 0.64 NS 0.69 L Up
SSC-TSS / 80154 FNC 12.3 1.2 94 0.08 Up 0.96 HL Up
FNF 24.56 2.5 41 0.42 NS 0.80 L Up