SNAP

Octoraro Creek at Richardsmere, Md.

Overview
  • Station Id: 01578475
  • County: Cecil
  • Drainage Area: 189 sq.mi.
  • Station Coordinates: 39.693°,  -76.125°
  • Period of record: 2006 to present
Location Description

Station is on the bridge 0.2 miles west of Richardsmere on Colora Road.

Data

2000 Land Use

Urban Agricultural Agricultural Forested Other
Row Crops Pasture/Hay Total
4% 47% 20% 67% 22% 7%
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
2015 Flow Normalized Trends
Trend period (Water Year) 2006-2015
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 -0.0503 -0.063 -7.5 0.08 Down 0.96 HL Down
FNF -0.0873 -0.011 -6.1 0.15 NS 0.93 VL Down
TNOx / 630 FNC -0.31 -0.039 -5.2 0.41 NS 0.79 L Down
FNF -0.0608 -0.0076 -4.9 0.52 NS 0.74 L Down
TON / 605 FNC -0.276 -0.034 -35 0.06 Down 0.98 HL Down
FNF -0.0538 -0.0067 -27 0.09 Down 0.96 HL Down
TNH3 / 610 FNC -0.0018 -0.00022 -2.3 0.97 NS 0.51 ALAN Down
FNF -0.0012 -0.00015 -4 0.98 NS 0.51 ALAN Down
DN / 602 FNC -0.574 -0.072 -8.7 0.07 Down 0.97 HL Down
FNF -0.1021 -0.013 -7.4 0.24 NS 0.88 L Down
DNOx / 631 FNC -0.143 -0.018 -2.5 0.92 NS 0.54 ALAN Down
FNF -0.0316 -0.0039 -2.6 0.78 NS 0.61 ALAN Down
DON / 607 FNC -0.325 -0.041 -44 <0.05 Down 0.99 HL Down
FNF -0.071 -0.0089 -42 <0.05 Down 0.99 HL Down
DNH3 / 608 FNC 0.0037 0.00047 5.3 0.91 NS 0.54 ALAN Up
FNF -0.0002 -0.00003 -0.75 0.63 NS 0.69 L Down
TP / 665 FNC -0.0151 -0.0019 -12 0.69 NS 0.662 L Down
FNF -0.0031 -0.00038 -6.3 0.91 NS 0.54 ALAN Down
DP / 666 FNC -0.0137 -0.0017 -15 0.57 NS 0.71 L Down
FNF -0.0037 -0.00046 -13 0.68 NS 0.662 L Down
DOP / 671 FNC -0.0053 -0.00067 -7.2 0.82 NS 0.59 ALAN Down
FNF -0.0014 -0.00018 -6.4 0.86 NS 0.56 ALAN Down
TOC / 680 FNC -0.287 -0.036 -8 0.28 NS 0.86 L Down
FNF -0.0663 -0.0083 -6.5 0.49 NS 0.76 L Down
SSC-TSS / 80154 FNC 2.17 0.27 14 0.79 NS 0.61 ALAN Up
FNF -0.6325 -0.079 -3.5 0.80 NS 0.59 ALAN Down