In Helena, the year's top story wasn't a sudden event. Growth and development churned away on a daily basis.

Construction crews built homes in the city, valley and forests. Excavators paved the way for more. Newcomers arrived in cars and on planes. Would-be developers lined up at government officials' doorways. Elected officials approved subdivision after subdivision.

The Queen City's Rocky Mountain locale is a magnet, experts said. Folks come to the country's "Third Coast" because of nearby mountains, rivers and lakes.

The greater Helena area is officially a "micropolitan" area of 67,636 people, according to the U.S. Census Bureau. While the population swelled by an estimated 1,000, landowners are preparing for many more.

Growth fueled the local economy, as housing starts reached record levels this year. More than 500 new homes are expected to be built in 2005. Last year, new construction created an estimated 753 jobs and pumped $28 million into the local economy, a figure certain to be bigger this year.

Two public projects figure to drive development even faster.

A new Interstate 15 interchange could feed thousands of homes and businesses on former ranchland. The South Helena exit could be constructed as early as late summer.

And Lewis and Clark County officials announced a proposal to extend city sewer services deep into the Helena Valley. The extended service area could encompass nine square miles, of which two-thirds is undeveloped.

Local officials also took great pains to avoid charging local residents for infrastructure improvements, tapping mostly federal funds for projects like the South Helena interchange and water treatment plant improvements. But as demand mounts, taxpayers might be asked to chip in more and more.

For example, the north valley area needs $36.1 million in road, sewer and water upgrades. Residents and developers would be expected to pony up for a proposed central valley sewer extension.

Rural residents could face more rules, as county officials said they're exploring zoning regulations. Such land use criteria could also protect property values. A water quality study may call for tougher sanitation standards.

Growth comes with costs, too.

Drivers spent more time in their cars. For example, more Jefferson County residents work in Lewis and Clark County than in their home county.

These vehicles and others occassionally choked Custer Avenue and other thoroughfares. Elected officials bemoaned a lack of "connectivity." A revised Area Transportation Plan found roadways and intersections could use a $165.1 million fix.

Though public land surrounds the area and the city has its own sparkling trail system, potential parkland in the valley is dwindling.

The City-County Parks Board continued to aside small sums for future land purchases, while the Prickly Pear Land Trust sought to work out conservation easements. Voters may be asked to borrow more dollars to buy parkland.

Disagreements over development and regulations sometimes led to legal salvos fired by attorneys. Opposition to new projects was not uncommon. Builders assailed county regulations, while hailing city cooperation.

Some residents said they didn't want to see quiet country lanes turned into busy thoroughfares. In the Birdseye area, homeowners erected fences to thwart crews at a nearby subdivision.

And worried homeowners continued to ask public officials if they'd have enough drinkable water. Experts usually answered questions for specific projects, but none could measure impacts to the broader area.

Water quality experts have measured increasing levels of groundwater-polluting nitrates. But a major study of North Hills water supply won't be ready until later this year.

In 2005, Helenans watched, heard and sensed their home was changing.