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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />Table 1 <br />Ralston Watershed - Hydrologic Summary Table <br />Design Peak Flows (cfs) <br /> <br />Area <br />Adjustment <br /> <br />(Square Miles) <br /> <br />Future Basin <br />Developed Conditions <br />FIS Published Data - Arvada/Blunn Reservoir & <br />Leyden Lake Excluded <br />IO-year SO-year 100-year 500-year <br /> <br />Future Basin <br />Developed Conditions <br />2003 Update - Arvada/Blunn Reservoir & <br />Leyden Lake Included (3) <br />10-year SO-year 100-year 500-year <br /> <br />Future Basin <br />Developed Conditions <br />2003 Update - Arvada/Blunn Reservoir & <br />Leyden Lake Excluded <br />1O-year 50-year 100-year 500-year <br /> <br />Location <br /> <br />Ralston Creek <br /> <br />Above Ralston Reservoir <br />Below Ralston Reservoir <br />Above Arvada/Blunn Reservoir <br />Below Arvada/Blunn Reservoir <br />Above Leyden Creek <br />Below Leyden Creek <br />Above Van Bibber Creek <br />Below Van Bibber Creek <br />At Mouth <br /> <br />7200 <br />5000 <br /> <br />879 5462 7228 11486 879 5462 7228 11486 <br />283 3608 5262 9603 283 3608 5262 9603 <br />282 3499 5069 9321 282 3499 5069 9321 <br />282 3499 5069 9321 272 3052 4440 8272 <br />2082 3924 4903 9036 1997 3779 4588 8061 <br />3384 6497 7962 10742 2789 5536 6795 9038 <br />3854 7316 8903 12109 3191 6170 7539 10204 <br />4742 9089 11 092 15165 4091 7932 9700 13200 <br />4769 9121 11134 15318 4101 7872 9617 13164 <br /> <br />48 <br />48 <br />48 <br />48 <br />48/39 (1) (2) <br />39 <br />39 <br />39 <br />39 <br /> <br />3200 <br />4000 <br />5000 <br />6100 <br />6300 <br /> <br />4800 <br />7900 <br />9700 <br />10600 <br />11500 <br /> <br />Leyden Creek <br /> <br />Above Leyden Lake <br />Below Leyden Lake <br />At Mouth <br /> <br />5577 <br />2247 <br />3295 <br /> <br />3269 <br />148 <br />1999 <br /> <br />4081 <br />373 <br />2465 <br /> <br />1569 <br />1569 <br />1596 <br /> <br />5577 <br />5577 <br />5607 <br /> <br />1569 <br />134 <br />964 <br /> <br />o <br />o <br />10 - 20 <br /> <br />2000 <br />2000 <br />2500 <br /> <br />3269 <br />3269 <br />3248 <br /> <br />4081 <br />4081 <br />4042 <br /> <br />3800 <br />3800 <br />4300 <br /> <br />Van Bibber Creek <br /> <br />At Mouth <br /> <br />2475 <br /> <br />3157 <br /> <br />4691 <br /> <br />1068 <br /> <br />4691 <br /> <br />1068 <br /> <br />10 - 20 <br /> <br />1000 <br /> <br />2475 <br /> <br />3157 <br /> <br />3000 <br /> <br />(1) Arvada/Blunn Reservoir "Excluded" adjusted for 48 sq. mi. for the 100- and 500-year flows, and 39 sq. mi. for the 10- and 50-year flows. <br />(2) Arvada/Blunn Reservoir "Included" adjusted for 48 sq. mi. for the 500-year flow, and 39 sq. mi. for the 10-, 50, and 100-year flows. <br />These different adjustments are due to the reservoir location between the rainfall boundaries and the reservoir attenuation affects. <br />The higher of the two calculated flows is listed. <br />(3) Flows with the Arvada/Blunn Reservoir and Leyden Lake Included were used in the FHAD modeling. <br />