▁from ▁ 2 5 0 ▁to ▁ 3 5 0 ▁micro - si em ens ▁per ▁cent imeter ▁at ▁. ▁The ▁cre ek ' s ▁p H ▁was ▁slightly ▁al kal ine , ▁r anging ▁from ▁ 7 . 7 ▁to ▁ 8 . 4 ▁and ▁the ▁water ▁hard ness ▁r anged ▁from ▁. ▁ ▁In ▁ 2 0 0 1 , ▁the ▁concentration ▁of ▁dissol ved ▁o xygen ▁in ▁Mouse ▁Creek ▁at ▁Urban ▁r anged ▁from ▁ ▁in ▁two ▁measurements . ▁The ▁carbon ▁dio x ide ▁concentration ▁r anged ▁from ▁ ▁and ▁the ▁ph osph orus ▁concentration ▁r anged ▁between ▁. ▁The ▁sul f ate ▁concentration ▁r anged ▁from ▁. ▁The ▁sil ica ▁concentration ▁r anged ▁between ▁. ▁The ▁concentr ations ▁of ▁flu or ide ▁and ▁ch lor ide ▁in ▁the ▁cre ek ' s ▁filtered ▁water ▁r anged ▁from ▁ ▁and ▁. ▁ ▁In ▁ 2 0 0 1 , ▁the ▁concentr ations ▁of ▁recover able ▁mag nes ium ▁and ▁calci um ▁in ▁Mou e ▁Creek ▁at ▁Urban ▁r anged ▁from ▁ ▁and ▁. ▁The ▁concentr ations ▁of ▁recover able ▁sod ium ▁and ▁pot ass ium ▁r anged ▁from ▁ ▁and ▁. ▁N umer ous ▁other ▁metal lo ids ▁and ▁met als , ▁such ▁as ▁alk ali ▁met als , ▁al kal ine ▁earth ▁met als , ▁l anth an ides , ▁transition ▁met als , ▁and ▁other ▁met als ▁have ▁been ▁observed ▁in ▁the ▁cre ek ▁ ▁The ▁annual ▁sed iment ▁load ▁in ▁the ▁upper ▁reaches ▁of ▁the ▁waters hed