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Comprehensive Stormwater Management Plan Northeast Lino Lakes Drainage Improvement Project WSB Project No. 2929-79 Page 10 Table 3-1. Existing Land Uses, Impervious Percentages, Curve Numbers, and Total Phosphorus Concentrations. LAND USE DESCRIPTION 1 ESTIMATED IMPERVIOUS PERCENTAGE 2 A 3 B 3 C 3 D 3 TP 4 [MG/L] AGRICULTURAL 0% 67 78 85 89 0.32 FARMSTEAD 10% 59 74 82 86 0.46 INSTITUTIONAL 65% 49 69 79 84 0.18 MAJOR HIGHWAY 75% 83 89 92 93 0.25 PARK, RECREATIONAL, OR PRESERVE 10% 39 61 74 80 0.04 RETAIL AND OTHER COMMERCIAL 75% 89 92 94 95 0.22 SINGLE FAMILY ATTACHED 65% 77 85 90 92 0.40 SINGLE FAMILY DETACHED 40% 51 68 79 84 0.30 UNDEVELOPED 0% 30 58 71 78 0.04 1 Metropolitan Council Generalized Land Use 2016 2 Lino Lakes 2030 Comprehensive Plan 3 NRCS National Engineering Handbook 4 MPCA Minnesota Stormwater Manual Table 3-2. Existing Land Uses by Region (in acres) Land Use Description HUGO EAST CENTRAL WEST TOTAL Agricultural 59.2 385.8 400.6 98.4 944.1 Farmstead 4.7 7.5 0.0 0.0 12.2 Institutional 0.5 0.0 0.4 0.0 0.9 Major Highway 0.0 13.6 24.8 0.0 38.4 Park, Recreational, or Preserve 15.4 0.0 0.0 0.0 15.4 Retail and Other Commercial 0.0 1.5 0.0 0.0 1.5 Single Family Attached 21.2 0.0 0.0 0.0 21.2 Single Family Detached 32.5 6.0 7.8 4.2 50.5 Undeveloped 82.1 119.5 13.7 49.9 265.2 Totals 215.6 534.1 447.3 152.6 1,349.6 3.2 Upper Rice Creek The URC model was updated to split existing catchments MRC_RC_001 into MRC_RC_001 and MRC_RC_001.5 along Peltier Lake Drive on the west CSMP boundary. Existing catchment MRC_RC_002 was also split into two subcatchments (MRC_RC_002 and MRC_RC_002.5) along the southwest CSMP boundary. A nearly five-acre discrepancy in drainage area between the received model input and GIS data was noticed at CWC_RC_PELTIER_008. As a precaution, all drainage areas were recalculated, but this subcatchment appeared to be an anomaly. The URC model was re-run and the inflow hydrograph at junction PELTIER_LAKE was exported from InfoSWMM and inserted into the existing conditions Rice Creek HEC-RAS model at storage area SA