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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Presentation transcript:

AVERAGE ANNUAL SEDIMENT AND NUTRIENT LOADS PHASE II OF THE NON-TIDAL ANACOSTIA MODEL Interstate Commission on the Potomac River Basin March 8, 2004

MODEL SEGMENTATION

PHASE I--PHASE II COMPARISON PHASE IPHASE II Simulation Period Land UseMOP 1990PG County 2000 Montgomery Co. Calibration DataCAMP OWML (NW Only) LTCP ( ) Calibration TargetSTORM CONC.STORM LOADS

TARGET STORMWATER CONCENTRATIONS (mg/l) ResidentialCommercialIndustrial BOD NO TKN TP TSS

SIMULATED AVERAGE ANNUAL SEDIMENT LOADS (tons/yr)

SIMULATED AVERAGE ANNUAL BOD LOADS (lbs/yr)

SIMULATED AVERAGE ANNUAL TP LOADS (lbs/yr)

SIMULATED AVERAGE ANNUAL AMMONIA LOADS (lbs/yr)

SIMULATED AVERAGE ANNUAL NITRATE LOADS (lbs/yr)

SIMULATED AVERAGE ANNUAL ORGANIC NITROGEN LOADS (lbs/yr)

ESTIMATED AVERAGE ANNUAL SEDIMENT LOADS (tons/yr)

ESTIMATED AVERAGE ANNUAL BOD LOADS (lbs/yr)

NW BRANCH BOD STORM LOADS (lbs) SIMULATED VS. OBSERVED

ESTIMATED AVERAGE ANNUAL NUTRIENT LOADS (lbs/yr)

SIMULATED LOAD AS PERCENT OBSERVED LOAD ORIGINAL PHASE I PHASE II PARAMETERS TSS337%142% TP70%47% TN625%37%

OBSERVED SEDIMENT CONCENTRATIONS

OBSERVED TP CONCENTRATIONS

OBSERVED TKN CONCENTRATIONS

THE REPORT IS AVAILABLE AT:

NEXT STEPS

CONTACTS Ross Mandel, ICPRB Rou Shi, ICPRB