At a regional level, research indicates that, over the next 70-100 years, Taranaki's temperatures could be up to 3°C warmer, the climate could be up to 20% wetter with more varied rainfall patterns, and flooding is likely to become more frequent and severe. The effects of climate change are manifold and likely to impose significant costs on the community. Global warming is expected to lead to a rise in the average sea level due to the thermal expansion of ocean water and melting of glacial and polar ice. Rising sea levels and more extreme weather events may increase coastal erosion, threaten vulnerable beaches and low-lying areas, and increase the need for coastal protection measures. In rural areas, if extreme events such as floods and droughts become more severe and frequent, costs to farmers associated with dealing with stock losses, increased soil erosion and damage and disruptions to farm operations would be expected to increase. A wetter climate may also increase pugging of pasture and cropping soils during winter. Hotter summer days could also increase competition for water uses in some areas between agricultural irrigation and domestic and industrial uses during drier periods. Generally warmer temperatures could further facilitate the spread of some pests, diseases and lower feed-quality sub-tropical grasses such as kikuyu grass. There may also be some benefits for agriculture and forestry through improved plant growth because of longer growing seasons and rising carbon dioxide levels and the potential for new crops and associated industries to move into new areas. In urban areas, heavier rainfall will put added pressure on drainage and storm water systems and increase flooding risks in some areas. Housing areas near river banks and lake shores are likely to become more prone to floods. Roading infrastructure might need more maintenance work and new structures such as bridges may need to accommodate higher flood peaks in their design