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Table 2 (Cont.) <br />Summary of Surface Water Monitoring Sites <br />for the Nucla Mine <br />Site Name <br />(Computer No.) Drainage Type of Flow Measurement and Remarks <br />S4!-N7 Upper West Return Flow height measured in CMP; flow determined using Manning's <br />(SA0007) Ditch equation (low flow measured with bucket and stop watch) <br />SW-NB Upper South Second Continuous recorder and stilling well coupled with manual <br />(SA0008, Std0008) Park Irrigation Ditch flow measurements (flow = cross section x velocity*) <br />(Tuttle Draw) <br />SW-N9 Lower South Second Continuous recorder and stilling well coupled with manual <br />(SA0009, SM0009) Park Irrigation Ditch flow measurements (flow = cross section x velocity* in wooden <br />(Tuttle Draw) flume box) <br />NPDES 001 Mid-Lower West Continuous recorder with sharp-crested 90° V-notch weir <br />(DA0001) Return Ditch <br />NPDES 002 Tributary to Type of flow measurement not determined; no discharge <br />(DA 0002) Tuttle Draw observed since 1980 <br />NPDES 003 Tributary to Type of flow measurement not determined; no discharge <br />(DA0003) Tuttle Draw observed since 1980 <br />*Mar sh-McBi rney flow meter used when possible on all velocity measurements. <br />