3h 



APPROXIMATE BED OF BAY 



BAY SIDE 



SECTION A-A 



NO SCALE 



NOTE ELEVATIONS ARE IN PROTOTYPE FEET 

 ELEVATION 0.0 IS MLW NEWPORT WHICH 

 IS 1.6 FT BELOW MSL 



HORIZONTAL 

 VERTICAL 



APPROXIMATE BED OF BAY 



WEST LOWER BAY BARRIER 



SCALES IN FEET 



1000 2000 



BAY SIDE 



SECTION B-B 



NO SCALE 



Fig. 17. Details of lower East and West Barriers 

 for plans 29 and 30 



with a gate for complete closure or complete opening. All of the struc- 

 tures had a crest elevation of +2U ft mlw. The Sakonnet River opening 

 was closed completely for all astronomical and hurricane tide tests of 

 plan 29. 



^8. The astronomical tide test of plan 29 was made for conditions 

 of the normal spring tide range of k.l ft at Newport^ and hurricane tide 

 tests were made for conditions of this astronomical tide in combination 

 with the 1938 hurricane tide and the 20-knot design hurricane tide. 



U9. The effects of plan 29 on astronomical tide ranges and eleva- 

 tions throughout the bay system are shown in table 2, together with the 



