Show water tunnel to extend 13 miles under GRAND LAKE COLO colorado will have the longest tunnel of its kind in the world when east meets west in a mile rock bore through the heart of the continental divide bids on the tunnel major unit ot of the colorado big thompson trans mountain water diversion project will be received at the bureau of reclamation in denver until june 7 engineers have estimated the work would cost at least the tunnel will pass under rocky mountain national park from grand lake to a point six miles southwest of estes park through it will gush water from the western slope of colorado to farm lands in the northern section of the state three reservoirs on the western side of the divide will store the awatar until needed d it is at this part of the conti tin divide that hat streams twist crazily down etler either side of the rocky hogback intersecting the rocky mountain region boring of the will be one of the most difficult feats ever undertaken der taken in the state slate because it will be bored from only two headings haulage ventilation and drainage will be major barriers approximately four years will be required to complete the entire col orado big thompson project |