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AVERAGE ANNUAL SEDIMENT AND NUTRIENT LOADS PHASE II OF THE NON-TIDAL ANACOSTIA MODEL Interstate Commission on the Potomac River Basin March 8, 2004
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MODEL SEGMENTATION
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PHASE I--PHASE II COMPARISON PHASE IPHASE II Simulation Period1988-19951996-2000 Land UseMOP 1990PG County 2000 Montgomery Co. Calibration DataCAMP OWML (NW Only) LTCP (1999-2000) Calibration TargetSTORM CONC.STORM LOADS
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TARGET STORMWATER CONCENTRATIONS (mg/l) ResidentialCommercialIndustrial BOD516.8516.7216.07 NO30.5950.5890.728 TKN1.522.811.14 TP0.4080.1930.249 TSS118123169
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SIMULATED AVERAGE ANNUAL SEDIMENT LOADS (tons/yr)
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SIMULATED AVERAGE ANNUAL BOD LOADS (lbs/yr)
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SIMULATED AVERAGE ANNUAL TP LOADS (lbs/yr)
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SIMULATED AVERAGE ANNUAL AMMONIA LOADS (lbs/yr)
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SIMULATED AVERAGE ANNUAL NITRATE LOADS (lbs/yr)
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SIMULATED AVERAGE ANNUAL ORGANIC NITROGEN LOADS (lbs/yr)
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ESTIMATED AVERAGE ANNUAL SEDIMENT LOADS (tons/yr)
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ESTIMATED AVERAGE ANNUAL BOD LOADS (lbs/yr)
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NW BRANCH BOD STORM LOADS (lbs) SIMULATED VS. OBSERVED
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ESTIMATED AVERAGE ANNUAL NUTRIENT LOADS (lbs/yr)
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SIMULATED LOAD AS PERCENT OBSERVED LOAD ORIGINAL PHASE I PHASE II PARAMETERS TSS337%142% TP70%47% TN625%37%
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OBSERVED SEDIMENT CONCENTRATIONS
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OBSERVED TP CONCENTRATIONS
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OBSERVED TKN CONCENTRATIONS
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THE REPORT IS AVAILABLE AT: http://www.potomacriver.org/info_center/publications.htm
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NEXT STEPS
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CONTACTS Ross Mandel, ICPRB rmandel@icprb.org Rou Shi, ICPRB roushi@icprb.org
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