Summary
Data Anomalies at USGS Site
NW Branch Anacostia River near Hyattsville, MD

State standards:   Temperature <= 32.2°C   Turbidity <= 150 NTU   6.5 <= pH <=8.5   Dissolved oxygen > 5.0 mg/l

Click on month/year to see details Site shutdown from Jan 2006 through Jun 2006 for lack of funding From June 30, 2007, until February 15, 2008, water-quality data collection at this streamgage was discontinued due to funding reductions from local agencies.

On June 30, 2010 water-quality data collection at this streamgage was discontinued due to funding reductions from local agencies.

Month/Year pH data in violation / pH data measured % pH data in violation Temperature data in violation / Temperature data measured % Temperature data in violation Turbidity data in violation / Turbidity data measured % Turbidity data in violation Dissolved oxygen data in violation / Dissolved oxygen data measure % Dissolved oxygen data in violation
Jun 2010 0 / 2880 0% 0 / 2880 0% 85 / 2880 2.95% 143 / 2880 4.96%
May 2010 5 / 2967 0.17% 0 / 2962 0% 74 / 2470 3.00% 0 / 2963 0%
Apr 2010 477 / 2873 16.60% 0 / 2450 0% 1 / 2448 0.04% 0 / 2450 0%
Mar 2010 79 / 2967 2.66% 0 / 2965 0% 590 / 2939 20.07% 0 / 2967 0%
Feb 2010 9 / 2688 0.33% 0 / 2688 0% 0 / 2636 0% 0 / 2688 0%
Jan 2010 8 / 2963 0.27% 0 / 2963 0% 0 / 2955 0% 0 / 2960 0%
Dec 2009 25 / 2972 0.84% 2 / 2968 0.07% 112 / 2934 3.82% 0 / 2973 0%
Nov 2009 5 / 2877 0.17% 0 / 2881 0% 38 / 2870 1.32% 1 / 2873 0.03%
Oct 2009 39 / 2586 1.51% 0 / 2556 0% 40 / 2545 1.57% 35 / 2582 1.36%
Sep 2009 2 / 2880 0.07% 0 / 2879 0% 1 / 2878 0.03% 0 / 2880 0%
Aug 2009 20 / 2972 0.67% 0 / 2966 0% 43 / 2938 1.46% 48 / 2972 1.62%
Jul 2009 74 / 2972 2.49% 0 / 2968 0% 5 / 2680 0.19% 15 / 2971 0.50%
Jun 2009 19 / 2874 0.66% 17 / 2871 0.59% 172 / 2808 6.13% 0 / 2869 0%
May 2009 65 / 2967 2.19% 61 / 2967 2.06% 283 / 2760 10.25% 0 / 2968 0%
Apr 2009 14 / 2872 0.49% 0 / 2872 0% 45 / 2833 1.59% 0 / 2872 0%
Mar 2009 135 / 2967 4.55% 0 / 2964 0% 66 / 2716 2.43% 0 / 2965 0%
Feb 2009 5 / 2684 0.19% 0 / 2683 0% 29 / 2676 1.08% 0 / 2681 0%
Jan 2009 17 / 2970 0.57% 0 / 2960 0% 4 / 2922 0.14% 0 / 2970 0%
Dec 2008 0 / 1965 0% 0 / 1965 0% 32 / 1880 1.70% 0 / 1963 0%
Nov 2008 48 / 2871 1.67% 2 / 2868 0.07% 9 / 2748 0.33% 0 / 2869 0%
Oct 2008 0 / 2960 0% 0 / 2963 0% 128 / 2708 4.73% 0 / 2963 0%
Sep 2008 0 / 2875 0% 0 / 2876 0% 70 / 2736 2.56% 28 / 2874 0.97%
Aug 2008 0 / 2973 0% 0 / 2973 0% 7 / 2927 0.24% 115 / 2973 3.87%
July 2008 0 / 2856 0% 0 / 2856 0% 145 / 2769 5.24% 0 / 2856 0%
June 2008 0 / 2911 0% 0 / 2911 0% 60 / 2828 2.12% 0 / 2911 0%
May 2008 0 / 2980 0% 0 / 2970 0% 102 / 2896 3.52% 0 / 2981 0%
Apr 2008 70 / 2301 3.04% 0 / 2288 0% 65 / 2286 2.84% 0 / 2259 0%
Mar 2008 3 / 2956 0.10% 0 / 2956 0% 60 / 2889 2.08% 0 / 2956 0%
Jun 2007 0 / 2291 0% 0 / 2863 0% 75 / 2630 2.85% 86 / 2856 3.01%
May 2007 0 / 2876 0% 0 / 2853 0% 161 / 2888 5.57% 43 / 2888 1.48%
Apr 2007 26 / 2876 0.90% 0 / 2876 0% 70 / 2870 2.44% 0 / 2872 0%
Mar 2007 0 / 2542 0% 0 / 2542 0% 126 / 2103 5.99% 0 / 2558 0%
Feb 2007 0 / 2681 0% 0 / 2683 0% 25 / 2681 .93% 0 / 2683 0%
Jan 2007 0 / 2973 0% 0 / 2973 0% 2 / 2972 .06% 0 / 2973 0%
Dec 2006 0 / 2852 0% 0 / 2852 0% 0 / 2826 0% 0 / 2852 0%
Nov 2006 0 / 2673 0% 0 / 2566 0% 65 / 2086 3.11% 0 / 2558 0%
Oct 2006 0 / 2936 0% 0 / 2896 0% 0 / 2127 0% 0 / 2892 0%
Sep 2006 0 / 2311 0% 0 / 2310 0% 2 / 2308 .09% 0 / 1610 0%
Aug 2006 0 / 3009 0% 0 / 3004 0% 0 / 46 0% 84 / 2976 2.82%
Jul 2006 0 / 1315 0% 0 / 1313 0% 0 / 0 0% 0 / 1313 0%
Dec 2005 0 / 2976 0% 0 / 2976 0% 1 / 2976 0.03% Not measured Not measured
Nov 2005 0 / 2880 0% 0 / 2880 0% 7 / 2880 0.24% Not measured Not measured
Oct 2005 0 / 2976 0% 0 / 2976 0% 166 / 2976 5.58% Not measured Not measured
Sep 2005 104 / 1618 6.43% 0 / 2496 0% 0 / 2496 0% Not measured Not measured
Aug 2005 145 / 2976 4.87% 0 / 2976 0% 1 / 2976 0.03% Not measured Not measured
Jul 2005 1 / 2976 0.03% 0 / 2976 0% 183 / 2976 6.15% Not measured Not measured
Jun 2005 0 / 2880 0% 0 / 2880 0% 24 / 2880 0.83% Not measured Not measured
May 2005 0 / 2976 0% 0 / 2976 0% 2 / 2976 0.07% Not measured Not measured
Apr 2005 116 / 2695 4.30% 0 / 2880 0% 97 / 2880 3.37% Not measured Not measured
Mar 2005 17 / 2976 0.57% 0 / 2975 0% 294 / 2976 9.88% Not measured Not measured
Feb 2005 0 / 2302 0% 0 / 2688 0% 0 / 2688 0% Not measured Not measured
Jan 2005 0 / 2976 0% 0 / 2771 0% 112 / 2976 3.76% Not measured Not measured
Dec 2004 0 / 2976 0% 0 / 2976 0% 73 / 2976 2.45% Not measured Not measured
Nov 2004 0 / 1293 0% 0 / 2875 0% 29 / 2880 1.01% Not measured Not measured
Oct 2004 0 / 435 0% 0 / 2972 0% 0 / 2976 0% Not measured Not measured
Sep 2004 0 / 2880 0% 0 / 2880 0% 30 / 2880 1.04% Not measured Not measured
Aug 2004 0 / 2976 0% 0 / 2976 0% 135 / 2976 4.54% Not measured Not measured
Jul 2004 0 / 2976 0% 0 / 2976 0% 180 / 2976 6.05% Not measured Not measured
Jun 2004 0 / 2880 0% 0 / 2880 0% 45 / 2880 1.56% Not measured Not measured
May 2004 0 / 2976 0% 0 / 2976 0% 27 / 2976 0.91% Not measured Not measured
Apr 2004 85 / 2880 2.95% 0 / 2880 0% 74 / 2880 2.57% Not measured Not measured
Mar 2004 8 / 2502 0.32% 0 / 2976 0% 15 / 2976 0.50% Not measured Not measured
Feb 2004 0 / 2304 0% 0 / 2304 0% 71 / 2304 3.08% Not measured Not measured