▁ 3 4 ▁hect ares ▁and ▁having ▁an ▁average ▁depth ▁of ▁ 4 . 5 ▁metres ▁( maxim um ▁ 6 ▁metres ), ▁Ham mar by ▁sjö ▁is ▁supplied ▁by ▁a ▁d rain age ▁area ▁covering ▁ 1 5 9 ▁hect ares ▁and ▁contains ▁ 1 , 6 0 0 , 0 0 0 ▁cub ic ▁metres ▁of ▁water . ▁ ▁Origin ally ▁a ▁lake ▁about ▁ 3 ▁metres ▁deep , ▁it ▁was ▁transformed ▁into ▁a ▁canal ▁when ▁connected ▁to ▁Sal ts jön ▁in ▁the ▁ 1 9 2 0 s ▁and ▁a ▁ 6 ▁metres ▁deep ▁channel ▁was ▁d ug ▁between ▁ ▁and ▁Sal ts jön ▁and ▁another ▁to ▁. ▁ ▁The ▁importance ▁of ▁the ▁water ▁exp anse ▁has ▁grown ▁since ▁the ▁late ▁ 2 0 th ▁century ▁as ▁new ▁resident ial ▁areas ▁have ▁been ▁constructed ▁along ▁its ▁sh ores . ▁ ▁Four ▁brid ges ▁stretch ▁over ▁Ham mar by ▁S jö ▁and ▁connected ▁bodies ▁of ▁water : ▁Dan vik s br on , ▁Sk ans br on , ▁Sk anst ull s br on ▁and ▁Johann esh ov s br on . ▁ ▁See ▁also ▁▁ ▁Geography ▁of ▁Stockholm ▁ ▁References ▁ ▁External ▁links ▁▁ ▁Category : W ater ways ▁in ▁Sweden ▁Category : Ge ography ▁of ▁Stockholm ▁Category : Land forms ▁of ▁Stockholm ▁County <0x0A> </s> ▁Barbara ▁Gl uck ▁( born ▁▁ 1 9 3 8 ) ▁is ▁an ▁American ▁photo j ournal ist , ▁art ▁photograph er , ▁speaker , ▁writer , ▁and ▁he aling ▁facil it ator .