STATE OF UTAH
(State of other jurisdiction of
incorporation or organization)

           1-8796
(Commission File No.)

                   87-0407509
                (I.R.S. Employer
               Identification No.)

          Item 7.   Financial Statements and Exhibits.

                    (c)   Exhibits.

Exhibit No.

Exhibit

99.1

Release issued April 30, 2003, by Questar Corporation.

          Item 9.   Regulation FD Disclosure.

          On April 30, 2003, Questar Corporation issued a press release announcing its earnings for the first quarter of 2003. A copy of this press release is furnished as Exhibit 99.1 and is incorporated by reference.

SIGNATURE

April 30, 2003

/s/S. E. Parks

S. E. Parks
Senior Vice President, Treasurer, and
Chief Financial Officer

List of Exhibits:

Exhibit No.

Exhibit

99.1

Release issued April 30, 2003, by Questar Corporation.

Exhibit 99.1

QUESTAR NET INCOME RISES 85% IN FIRST-QUARTER 2003

     SALT LAKE CITY -- Questar Corp. (NYSE:STR) reported an 85% increase in net income for the first three months of 2003 compared with the 2002 period, reflecting higher nonregulated natural gas and oil prices and improved results from regulated businesses.

     The integrated natural gas company earned $64.6 million, or $.77 per diluted share, in first-quarter 2003 after a $.07-per-share noncash charge resulting from the cumulative effect of implementing SFAS 143. Under this new accounting rule for recording asset-retirement obligations, the company must record a liability for anticipated costs of retiring long-lived assets. In comparison, Questar earned $34.9 million, or $.42 per diluted share, in the first-quarter 2002 after a $.19 per-share cumulative effect of a change in accounting for goodwill.

     Excluding the nonrecurring cumulative effect of accounting changes in both years, Questar earned $70.2 million, or $.84 per diluted share, in first-quarter 2003, 40% higher than the $50.2 million, or $.61 per diluted share, earned in the comparable year-earlier period.

     There was an average of 83.5 million common diluted shares outstanding in the 2003 period versus 82.3 million shares a year earlier.

     "As a result, we're increasing earnings guidance for 2003," Rattie said. "We now project that 2003 earnings should range between $2.05 and $2.20 per share (previous guidance was $1.95 to $2.10 per share). The higher guidance is based on current gas- and oil-hedge positions, and assumes prices for unhedged natural gas production at or near levels reflected in the forward-price curves at the close of business Tuesday, April 29." Rattie said the 2003 guidance excludes the cumulative impact of adopting SFAS 143, "Accounting for Asset Retirement Obligations."

     "More importantly, we're on track with our plans to accelerate our drilling program on the Pinedale Anticline in western Wyoming," Rattie said. "We now plan to drill and complete about 25 wells at Pinedale in 2003 - ramping up to 30 to 35 wells in 2004 - compared with an average of 15 wells per year in 2000-2002."

     The Questar president said all 2003 Pinedale wells will test both the Lance and the deeper Mesaverde formations. Each new Pinedale well is projected to add about 8 billion cubic feet equivalent (bcfe) of gross reserves, with first-month average gross sales volumes of 4-6 million cubic feet of gas per day. "To reduce the environmental impact, we will drill multiple wells from a single pad where possible," Rattie said. "We will also centralize production facilities, where possible, to minimize road construction and other surface impacts.

     "The net effect of this revised plan is a 'win-win' for Questar and the environment - accelerated cash flow and earnings from Pinedale, with significantly less impact on wildlife and habitat. We'll begin to see the production and earnings contribution of Pinedale acceleration in the second half of 2003, but the primary impact will be in 2004 and beyond," Rattie said.

     Questar Market Resources (QMR), a subsidiary that conducts gas and oil exploration and production, gas gathering and other nonregulated activities, earned $28.9 million in the 2003 quarter versus $17.6 million a year earlier. The 2003 number included a $5.2 million reduction for the cumulative effect of the accounting change.

     Nonregulated natural gas production totaled 20.1 billion cubic feet (bcf) in the 2003 period compared with 20 bcf a year earlier. A 20% increase from Rockies producing areas offset the impact of the 2002 sales of a Canadian production subsidiary and other nonstrategic properties. Oil and natural gas liquids production declined 23% to 572,000 barrels in first-quarter 2003, primarily due to the Canadian sale. On an energy-equivalent basis, QMR's first-quarter 2003 nonregulated production was 23.5 bcfe compared with 24.5 bcfe in the year-earlier period.

     QMR's average realized selling price of natural gas, net to the wellhead, was $3.52 per Mcf in the 2003 quarter compared with $2.44 in the prior-year period. The average realized price for nonregulated oil and natural gas liquids rose 31% year on year to $24.71 per barrel, net to the well, in the 2003 period. QMR's results were negatively affected by the Dec. 31, 2002, expiration of Section 29 gas-development tax credits, which contributed net income of $1.1 million in first-quarter 2002.

     QMR's depreciation, depletion and amortization rate was $.92 per thousand cubic feet equivalent (Mcfe) in first-quarter 2003 compared with $.89 per Mcfe in the 2002 quarter.

     Wexpro, a QMR subsidiary that develops gas properties on behalf of Questar's gas-distribution utility, reported net income of $7.6 million in first quarter 2003, the same as the prior-year period. The 2003 results included a $600,000 charge for the cumulative effect of the accounting change. Wexpro earns a specified return on the net investment in commercial wells drilled on behalf of Questar Gas. The net investment base was $159.3 million at the end of first-quarter 2003 versus $163 million a year earlier.

     Questar Gas Management (QGM), a QMR subsidiary that conducts gas gathering and processing activities, earned $3.6 million in the 2003 quarter compared with $1.4 million a year ago. Gathering volumes increased 8% to 52 million decatherms (dth) in the 2003 quarter with expanded deliveries from the Uinta Basin in eastern Utah and the Pinedale-Jonah region in western Wyoming. QGM is also a 50% partner in Rendezvous Gas Services, which provides gathering and processing services for Pinedale-Jonah producers. Net income from QMR's energy-marketing activities in the 2003 quarter rose to $1.7 million compared with $300,000 a year earlier.

     Net income for Questar Gas - a retail gas-distribution utility - increased from $24.2 million in first-quarter 2002 to $25.7 million in the 2003 period. Primary factors in the increase were new rates that went into effect on Jan. 1, 2003, customer additions, and higher usage per customer. The cumulative effect of the 2003 accounting change resulted in a $300,000 charge.

     Questar Gas added 18,212 customers in the 12 months ended March 31, 2003 - a 2.5% growth rate. Usage per customer on a temperature-adjusted basis rose 2.4% in the 2003 quarter over the prior-year period. In first-quarter 2003, the utility incurred increased depreciation expense due to system growth and moderately higher pension and benefit costs.

     Questar Pipeline, which operates a gas-transmission and storage system in Wyoming, Utah and Colorado, reported first-quarter 2003 net income of $7.9 million compared with $7.4 million in the 2002 period. The cumulative effect of the 2003 accounting change was $100,000.

     Questar Pipeline's total transportation volumes grew 4% to 108.7 million dth with the mid-year 2002 service commencement of the company's Questar Southern Trails Pipeline. Transportation on behalf of Questar Gas declined 23% year to year because temperatures in the utility's service area were 11% warmer than normal compared with 21% colder than normal in the 2002 quarter.

     Questar Pipeline's net income also benefited from lower legal expenses due to the settlement of TransColorado Pipeline litigation.

     Corporate and Other Operations generated net income of $2 million in first-quarter 2003 versus a $14.5 million loss in the year-earlier quarter, which included a $15.3 million charge related to a change in accounting for goodwill.

     Total 2003 nonregulated natural gas, oil and natural-gas liquids production is projected at 88 to 92 bcfe.

     Questar Market Resources has price hedges averaging $3.44 per Mcf, net to the well, on 37.2 bcf of proved-developed gas production from April 1 to Dec. 31, 2003. QMR has hedged 825,000 barrels of 2003 oil production at an average price of $21.80 per barrel, net to the well, in the April-December period.

     Approximately 31.7 bcf of 2004 proved-developed gas production is hedged at an average price of $3.70 per Mcf, net to the well. There are no hedges to date on 2004 oil production.

     Questar is an integrated natural gas company headquartered in Salt Lake City with total assets of $3.1 billion. Through subsidiaries, it engages in gas and oil development and production; gas gathering, processing and marketing; interstate gas transmission and storage; retail gas distribution; retail energy services; and information systems and technologies.

     This release contains certain forward-looking statements within the meaning of the federal securities laws. Such statements are based on management's current expectations, estimates and projections, which are subject to a wide range of uncertainties and business risks. Factors that could cause actual results to differ from those anticipated are discussed in the company's periodic filings with the Securities and Exchange Commission, including its annual report on Form 10-K for the year ended Dec. 31, 2002. Subject to the requirements of otherwise applicable law, the company cannot be expected to update the statements contained in this news release or take actions described herein or otherwise currently planned.

CURRENT HEDGE POSITIONS

     Gas hedges/2003

Bcf

Price per Mcf.,

net to well

     Rocky Mountains

          2^nd qtr

9.0

$3.16

          2^nd half

17.0

$3.21

          Apr - Dec

26.0

$3.19

     Midcontinent

          2^nd qtr

4.3

$4.02

          2^nd half

6.9

$4.00

          Apr - Dec

11.2

$4.00

     Total

          2^nd qtr

13.3

$3.44

          2^nd half

23.9

$3.44

          Apr - Dec

37.2

43.44

     Gas hedges/2004

Bcf

Price per Mcf,

net to well

     Rocky Mountains

          1^st half

10.6

$3.41

          2^nd half

10.8

$3.41

          Year

21.4

$3.41

     Midcontinent

          1^st half

5.1

$4.30

          2^nd half

5.2

$4.30

          Year

10.3

$4.30

     Total

          1^st half

15.7

$3.70

          2^nd half

16.0

$3.70

          Year

31.7

$3.70

     Oil hedges/2003

Mbbls

Price per bbl,

net to well

     Rocky Mountains

          2^nd qtr

228

$21.68

          2^nd half

460

$21.68

          Apr - Dec

688

$21.68

     Midcontinent

          2^nd qtr

45

$22.38

          2^nd half

92

$22.38

          Apr - Dec

137

$22.38

     Total

          2^nd qtr

273

$21.80

          2^nd half

552

$21.80

          Apr - Dec

825

$21.80

For more information, visit Questar's internet site at: www.questar.com