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Operator Brannan S&GSite NameTrout Valley RanchPrecipitation (in)Temperature (˚F)AggregateWashedAsphalt/Conc.Annual Operating Days1355 Jan 0.40 32.00 0% 0% 0%Average Working Days Per Month129.6 Feb 0.42 30.40 0% 0% 0%Annual Aggregate Production1 (t)275,000 Mar 0.86 38.80 0% 0% 0%Annual Asphalt/Concrete Production1 (t)- Apr 1.04 45.80 10% 10% 0%Annual Washed Rock Production1 (t)475,000 May 0.88 54.70 15% 15% 0%Total Annual Production1 (t)750,000 Jun 0.91 67.60 15% 15% 0%Material below Watertable10% Jul 2.80 72.90 15% 15% 0%Average Depth to Watertable1 (ft)20.00 Aug 2.63 69.30 15% 15% 0%Exposed Ground Water Surface1 (acres)0.49 Sep 1.14 62.30 10% 10% 0%Process Ponds Surface1 (acres)1.10 Oct 0.93 52.00 10% 10% 0%Annual Evaporation2 (in)35.00 Nov 0.44 40.80 10% 10% 0%Precipitation3 (in)13.07 Dec 0.62 31.20 0% 0% 0%Effective Precipitation Factor70%Aggregate Moisture Content42%Transmissivity6 (gpd/ft)58,900 Sanitary Use5 (gpd)- Nearest Weather Station Fairplay, COSpecific Yield716%Dust Control1 (gpd)12,852 Elevation (ft)10,100 Well to River Span8 (ft)3,400 Wash Plant1 (gpt)4.79 Latitude (Deg) 39.22 Crusher/Screen1 (gpt)2.28 1 From SWSP document2 From NOAA Technical Report 333 From Western Regional Climate Center4 From Guidelines for SWSP For Sand and Gravel Pits (by weight) published by the Colorado Division of Water Resources.5 No sanitary water uses.6 Converted from Metric Units in Groundwater Hydrology, David Keith Todd assumes Till, predominantly gravel & 80 ft aquifer thickness7 From Groundwater Hydrology, David Keith Todd assumes Till, predominantly gravel.8 Distance from Centroid of Lake/Pit to the nearest river edge.Operational Water UseWPDM Model InputMonthly DataTable 1: Model InputsGeneral InformationClimate3Production1